->''"64. When your show's opening theme song starts to play, your enemies are fucked."''
-->-- ''[[http://fudoushin.files.wordpress.com/2008/11/rules.jpg The Laws of Super Robot Anime]]''

A character's strength and abilities are directly proportional with how [[RuleOfCool cool]] their [[{{Leitmotif}} personal theme music]] is. The more suddenly it starts up and the louder it is, the more butt-kicking is about to commence. This applies to both heroes and villains and is a power that the BadassNormal is allowed to use. Alternatively, the music is a representation of the character getting into "the zone".

Video games will sometimes have a variation of this, where a specific jingle plays during temporary power-ups, like invincibility due to an InvincibilityPowerUp; see PowerUpMotif.

If a ThemeMusicPowerUp is defeated, then it's TheDayTheMusicLied. If it's in particularly spectacular fashion, it may end with a RecordNeedleScratch or by LettingTheAirOutOfTheBand (or, if you're ''really'' unlucky, a LastNoteNightmare).

OminousLatinChanting, the OneWomanWail, or the CherubicChoir are popular choices for this, as are a techno beat or [[ThePowerOfRock heavy metal riff]].

Sometimes, near the end, the series ThemeSong will play, allowing ''every'' good guy to kick some major rear at the GrandFinale. This is a LastEpisodeThemeReprise.

Compare AutobotsRockOut, MostWonderfulSound, PowerUpMotif, MusicForCourage, NearVictoryFanfare, and MusicalSpoiler (the last of which is arguably a SuperTrope).

----
!!Examples

[[foldercontrol]]

[[folder:Anime & Manga]]
* This was also done by ''Anime/NeonGenesisEvangelion''. Whenever EVA-01 is about to kick some ass and tear some unfortunate Angel a new one, either [[http://youtu.be/nt4ldDExzhU The Beast]] or [[http://youtu.be/oHRBFTWSguY The Beast II]] plays. The Beast II is even used for such moments in the crossover ''VideoGame/SuperRobotWars'' games. Also, in the series' original ''MindScrew'' happy ending, when Shinji realizes his whole life doesn't need to revolve around piloting EVA-01 and he can live a happy life without it, two versions of the show's theme "A Cruel Angel's Thesis" are played, a strings version, [[http://youtu.be/LKy7PnjsDX8 The Heady Feeling of Freedom]], and a piano and guitar version, [[http://youtu.be/nWEt_VgLOWY Good, or Don't Be]], in succession.
** [[RebuildofEvangelion Rebuild]] gives ''Shinji'' his own Theme Music Power up with [[http://youtu.be/9xiLqf2VZj0 Sin From Genesis]], a remix of Beast II that plays over his [[spoiler: epic beatdown of Zeruel.]]
*** In EndOfEvangelion, it's not enough that Asuka triggers a giant cross shaped explosion when she breaks out of her coma and starts tearing the Geo Front apart in Unit-02, the music shifts accordingly. The previous scenes had a dark musical score to accompany the scenes the JSSDF invading Nerv HQ. This changes suddenly to a loud and triumphant music that plays as Asuka comes to term with her past, overcomes it, and finally just starts tearing things apart. The director of the English dub even calls Asuka the brightest, happiest character in the entire movie during this particular scene. The music that plays when Asuka is fighting the Mass Production Eva Units can count as well, depending on the viewer.
* ''KaraNoKyoukai'' has Shiki's unofficial theme [[http://www.youtube.com/watch?v=MyreoAE1Zkc "Seventh Heaven"]] played [[http://www.youtube.com/watch?v=_52R_IY8H60 several dozen]] [[http://www.youtube.com/watch?v=EQ0CqlqnpH8 times over]] [[http://www.youtube.com/watch?v=mUi25FYk6Xw the course]] [[http://www.youtube.com/watch?v=FSLd4O1wOGk of]] [[http://www.youtube.com/watch?v=cXJ9hAuBhKs the]] [[http://www.youtube.com/watch?v=-ph7fvOXf7s series]], but it gets kicked up a notch or two for [[http://www.youtube.com/watch?v=7480ZmNOB98 her]] [[http://www.youtube.com/watch?v=RodLJh3Bri8 fight]] [[http://www.youtube.com/watch?v=kflMgrjXsa8 scenes]].
** Whenever YukiKajiura and the strings and chimes of awesome strike up, not only is the unkillable going to be killed, it's going to be ''spectacular''.
* ''The LightNovel/{{Slayers}}'': Lina has the same music anytime she casts Dragon Slave (and Giga Slave and Laguna Blade). Also somewhat distorted on the Battle Music (same every time--''ikinashi oodate'') and totally distorted for Amelia and Gourry (with ''douchuuki'').
** ''Slayers Evolution-R'' has a variation on the "series theme plays as BigBad gets ass handed to him" thing, playing the theme from ''Next''.
* Usagi of ''Anime/SailorMoon'' had several theme songs based on ThePowerOfFriendship. The Outer Senshi have their own RuleOfCool music.
** A bit different in the final season, in which the new addition to the cast--the Sailor Starlights--had an appearance theme very different to the traditional "sudden and loud" ones: starting quiet and subtle and then getting louder during the close-up on them.
** The English-dubbed version of the Season 1 finale features "Carry On" during the final battle, one of the very few improvements over the Japanese original (the original used the full-length [[AnimeThemeSong opening song]] "Moonlight Densetsu"). Other songs featured are "Ai no Senshi", "La Soldier" (from the Sailor Moon R finale), and "Moon Revenge" (from the R movie). The last episode of ''Sailor Stars'' uses the season's opening "Sailor Star Song" in this manner.
* ''Manga/{{Bleach}}'': Whenever Ichigo is about to kick some serious ass, "Number One" kicks in. The song title is a pun on one of the meanings of Ichigo's name and accompanies his activities in one of several variants. When Aizen defeated Ichigo with a single finger, his theme music power-up was [[TheDayTheMusicLied instantly defeated]] as well.
* Music/HiroyukiSawano & Mika Kobayashi have made an art form out of this trope:
** ''GuiltyCrown'' does this when the main character [[PowersInTheFirstEpisode gets his powers at the end of the first episode]], with a song called [[http://www.youtube.com/watch?v=iF3dxVJPKV4 Bios]], composed by the wildly popular J-Pop band Supercell and sung in GratuitousGerman. Don't let the mangled pronunciations get you; it's only because the singer is Japanese. Take a good look at the actual lyrics and you'll see that not only is the German grammar flawless, but the lyrics also allude to the ordeals the characters in the actual show face. As of Winter 2011, there were also several cases of AutobotsRockOut, and at that point the show was only halfway through ''season one.''
** In ''Manga/AttackOnTitan'', whenever the vocal portion of "[[http://www.youtube.com/watch?v=CGjwsowDDhI Attack On Titan]]" starts playing, ''shit just got real.''
** In ''{{Anime/Kill La Kill}}'', whenever you hear [[http://www.youtube.com/watch?v=JBoocPe_DNU "DON'T LOSE YOUR WAAAAAY!"]] (or its [[https://www.youtube.com/watch?v=JxIqfDm7orA epic orchestral version]] later on) you know tremendous amounts of ass are about to be kicked. It's used in the GrandFinale ''twice'', the second opening, "Ambiguous" playing first, and then "Sirius" during the climax.
* In ''[[LightNovel/HighSchoolDXD High School DxD]]'''s final episode of the first season, the show's theme plays to accompany Issei finally taking the gloves off and /breaking/ Raiser.
* Kirika and Mireille of ''Anime/{{Noir}}''. [[OminousLatinChanting ''SALVA NOS, DEUUUUUS!'']]
** One shot even has Kirika wait to shoot the guy until the music finishes.
** Similarly, anytime you start to hear Yanmaani (the song's title is "Nowhere") in the background in ''{{Madlax}}'', the titular character is about to kick serious amounts of ass with inhuman skill. It's so prevalent that TheOtherWiki even mentions it. It is a joke among fans that the word gives Madlax super powers.
* The Twelve [=SISTERs=] of ''CoyoteRagtimeShow''.
* ''Manga/{{Saiyuki}}'' has the OP theme "For Real"; it's not surprising that the rockin' guitar version brings the pain to you, but what's more interesting is that the gentle, tinkling piano version can either be the theme to character growth and introspection... or the warning that Genjo Sanzo is about to deliver a NoHoldsBarredBeatdown on whoever's in his way--complete with some snarky deconstruction of whatever BS the poor yutz was trying to spout at the time.
* ''Anime/YuGiOh'' has the show's main theme begin to play pretty much every time Yugi pulls off an epic combo. The theme of the Egyptian God cards plays whenever one of them is summoned.
** In the first season's English dub, Kaiba's theme, "I'm Back," plays in a few choice ThemeMusicPowerUp spots.
* During Episodes 18 and 19 of the ''Anime/YuGiOhGX'' dub, the duelist who purloined Yugi's deck and was dueling Jaden kept having musical overtures from the previous series playing. Towards the end, they were even being played in the same musical style as a lot of GX music.
* ''YuGiOh5Ds'' has a variety, kicking off with ''Jack Battle'' in the very first episode when he summons Red Demons in a televised duel, then got upgraded to an early and unreleased track when summoning Savior Demon Dragon that goes under the FanNickname ''Jack Battle 2''. Yusei has his own themes, ''Yusei Battle 2'' usually reserved for whenever he whips out Savior/Star Dragon. As of late, with Accel Synchros coming into play, a couple of occasions featuring Yusei summoning Shooting Star Dragon are accompanied by ''Clear Mind'' sung by Masaaki Endoh.
* ''LightNovel/{{Dokkoida}}?!'' hangs a [[LampshadeHanging Lampshade]] on this; the hero's power suit is able to induce this state by playing a heroic theme song. At least if the company that made the suit actually got that feature working before they released it. But the hero doesn't know that, and he [[MagicFeather manages to get the same effect]] just from suggestion and enjoying the HotBlooded music.
* Pretty much every evolution sequence in every season of ''Franchise/{{Digimon}}'' adheres to this trope. The more absurdly powerful the evolved form is, the more obnoxious and high-pitched the theme music will be, whereas less impressive evolutions (compared to the one available to the main character's partner at any given point in the series) often go by without music altogether. Also, true to this trope, evolution music invariably stops as soon as the evolved Digimon is hit by it's enemy.
** A good example occurs in the Adventure movie, Bokura No War Game. The evolution song, 'Brave Heart', plays throughout one of the battle scenes, and when Patamon tries to digivolve to his Adult/Champion level, he is attacked, at which point the music cuts out suddenly. It resumes around 30 seconds later when Taichi and Yamato's Digimon charge to counter attack. And then, before the computer crashes on Taichi, the line 'SHOW ME YOUR BRAVE HEART!' skips and replays several times, cutting out when the computer gets the [=BSoD=].
** Another example of the above happens in the episode where Greymon dark digivolves into [=SkullGreymon=]. During the battle scene, Brave Heart plays as normal, but a few seconds into the evolution scene, the song fades into a really dark and sinister piece of BGM.
** ''Anime/DigimonSavers'' adheres ''doubly'' so. There's a set of {{leitmotif}}s for various stages of evolution, but whenever [[AutobotsRockOut the J-Rock theme tune]] [[http://youtu.be/D8Yh68qgU78 "Believer"]] cues up, you know the MonsterOfTheWeek is about to get beaten in a spectacularly flashy, HotBlooded manner. Sadly, due to the song being Japanese and the dubbing company having a music budget of about a nickel, it was cut in the domestic release, replaced with the more standard evolution {{leitmotif}}s.
** And in ''Adventure'', we have "Hey Digimon". It plays, then you're screwed.
** The American Digimon movie had a fairly good example in the first half. after the swarm of Diaboromons blast Wargreymon and Metalgarurumon into submission, the scene where the two digimon fuse into Omnimon was accompanied with a [[CrowningMusicOfAwesome Spine Chilling]] rendition of the Digimon theme. However, the movie took a different route with the actual fight scene, which was treated to a [[strike: ear-rendingly bad licensed pop-rock song that is completely at odds]] very different but still equally good song that still fits with the CurbStompBattle being shown.
*** Another TheMovie dub example: the fight between Parrotmon and Greymon. 15 minutes in and with only a narmy rap remix of the theme heard so far, Greymon introduces himself to Tai. The distant sound of records scratching echoes across the 5.1, and three glorious almost-words, despite being only whispered, are still louder than the biggest explosion: "[[CrowningMusicOfAwesome DI- DI- DI-...]]"
*** From the same fight, after Greymon blacks out (Parrotmon is a [[EvolutionaryLevels level higher]] than Greymon, so he's having some trouble), Tai uses the whistle to wake him up for round two. We don't hear too much of the song, [[CurbStompBattle as round two is much shorter.]]
** Four words: [[http://youtu.be/xcNEqL9iddM We Are Xros Heart!]] (even a [[http://youtu.be/xCCiIpLhezI version X7]]!), [[http://youtu.be/1qusB9y20Wk Evolution and DigiXros Taiki]] (or [[http://youtu.be/gHlqlvPkMl0 Kiriha]])! When that music plays, you know someone is going to curbstomp something.
* ''Manga/CardcaptorSakura'' seems to have a {{leitmotif}} that appears on the soundtrack whenever she finally joins battle with a particularly powerful enemy. (If you've seen the show, you'll recognize it as a disco-style instrumental with oddly majestic sweeping strings playing the melody).
* Various versions of a heavy, hot-blooded rap song are played during pivotal power-up moments in ''Anime/TengenToppaGurrenLagann''. Eventually they get so powerful that they actually get those lyrics superimposed on an ''[[OneWomanWail opera]]'' track.
** ''Tengen Toppa Gurren Lagann'' plays this down to the very basis of each part of the trope. There's the various power-up versions of 'Rap Is A Man's Soul!' (AKA [[MemeticMutation 'ROW ROW FIGHT DA POWAH']]) One for Kamina, one for [[spoiler:Gurren-dan, after Kamina's death]], and [[OneWomanWail "Libera Me From Hell"]]. Along with these are 'Ten Wo Tsuke/Pierce the Heavens With Your XXX!' (Occurs in Episodes 1 and 8, when they first break through to the surface and the first Giga Drill Breaker), "Happily Ever After" (Insert Song, used in Episode 11 when Simon has his famous HesBack moment), and the full version of the show's theme, Sorairo Days, used when [[spoiler: the cast fight on top of galaxies against the Anti-Spiral.]]
** Also works for the bad guys: whenever Viral shows up and does something awesome, the SurprisinglyGoodEnglish song "Nikopol" plays. The meaning of the title Nikopol coming from the greek as ''Nikę'' meaning victory and ''polis'' which is city. "City of victory" sounds ''very'' ironic when you realize how this guy keeps losing to the good guys every single time. [[spoiler: But he '''never''' gives up, eventually joins the good guys, and lands up being immortal and apparently very happy as an ambassador of the Earth. He won after all.]]
** Subverted in Episode 25 where an attack is launched, a power up song starts... and the missile is harmlessly crushed before it can reach its destination. In all fairness, that wasn't the main theme song anyway.
*** Then played straight immediately after.
** In Episode 2, when Kamina and Simon hijack the Gunzan, later named Gurren, the SurprisinglyGoodEnglish song "Gattai Nante Kusokurae" (AKA "To Hell with Gattai") starts playing.
*** It plays during the final battle with Lordgenome as well, when Simon is reduced to fighting the Spiral King's Gurren Lagann-style mech with just his own Lagann, and totally kicks ass.
** During the final battle with the Anti-Spiral in the second movie, a new version of Sorairo Days plays. It blows away the series final battle in sheer awesomeness and badassery, and must be seen/heard to be comprehended.
* ''FutariWaPrettyCure'': Nagisa and Honoka are undefeatable when the instrumental version of the theme song is playing. And if the background music has lyrics, they can accomplish miracles like defeating Jaaku King or getting Kiriya to turn good. At the end of ''Futari Wa Pretty Cure Max Heart,'' [[spoiler: the theme song was played with lyrics, which was both at once and thus gave Pretty Cure the ability to defeat the Jaaku King [[BackFromTheDead for real this time]]]].
** The ''All Stars Deluxe'' movie does this a total of ''four'' times. [[http://youtu.be/0c5_XrkFTXw It happens once for each of the teams that had already finished their seasons]], and after this, the main theme of the movie plays for the final group attack.
** ''HeartcatchPrecure'' has "Heart Goes On" for its big moments. However, the first time it was played, it was rather tame - a combined musical concert and fashion show. The next two times it's played [[spoiler:(after Cure Blossom passes the Final Test and helps bring about the Heartcatch Orchestra for the first time and the final battle between the Precures and BigBad Dune)]] it's played straight.
* In [[HajimeNoIppo Hajime No Ippo]] in the last match of the first series when Sendo misses ippo with his Smash, the intro them Inner Light starts playing and ippo breaks his ribs with a liver blow, stuns him with an uppercut to the jaw, and finishes him with a mutiple punch rush called the Dempsey Roll. Suffice it to say, it is [[CrowningMomentOfAwesome truly EPIC]] !!
* ''KonjikiNoGashBell'' brings a quite literal example of this trope. Italian Super Star Parco Folgore has a hit song known as "Muteki Folgore" (Invincible Folgore) with the ability to revive him every time he has been knocked down if it is sung by his partner Kanchome.
* The first season theme of ''HajimeNoIppo'' often plays during Ippo's final drive to victory in a given match.
** Subverted in one episode where during Ippo's first match against Japan Featherweight Champion Eiji Date, it is suddenly interrupted by Eiji's counter punch.
** The song Inner Light, the opening for that season, begins to play in full Ippo begins his final counterattack against Sendou during the Japanese Featherweight Championship, when he pulls off his newly completed Dempsey Roll for the first time.
* When you hear Fate's voice actress, NanaMizuki, start to sing her insert song for that season of ''MagicalGirlLyricalNanoha'', expect every villain currently on screen to have their asses handed to them within the next five minutes. Fate gets a particularly big one of these in the form of the awesome "Pray" during the final showdown with Jail Scaglietti and the Numbers in Season 3.
** In season 1, it's "Take a Shot". In season two, it's "BRAVE PHOENIX". Mentioned above, in season 3, it's "Pray". In ''The Movie 1st'', it's "Don't be long". In ''The Movie 2nd A's'', it's "Sacred Force -Extended Mix-".
** Similarly, Nanoha gets an awesome variation during her fight with Quattro. As Nanoha's Wide Area Search finds Quattro, the background music shifts from Quattro's synth-organ {{Leitmotif}} to Nanoha's [[http://youtu.be/TsSjvKOdL8M "Ace of Aces"]] battle theme.
** The aptly named [[http://youtu.be/0cXSIxhGaJ4 "Shooting Action"]] signals when a hero gets up, sometimes after a memory or speech, and lays the smackdown on one of the villans, preferably with a WaveMotionGun.
* Likewise, whenever "Meteor" or "Vestige" play in ''[[Anime/MobileSuitGundamSeed Gundam SEED]]'' or ''[[Anime/MobileSuitGundamSeedDestiny Gundam SEED Destiny]]'', expect Kira Yamato to appear and disable the entire opposition without a scratch.
** When Cagalli shows up in the Akatsuki to help defend ORB from the ZAFT attack in Destiny and the song "Honoo no Tobira" plays. Basically, the ORB forces go from on the ropes to fighting chance, [[spoiler: to winning the day when Kira and Lacus show up]].
* ''[[Anime/MobileFighterGGundam G Gundam]]'' had two themes dedicated to Domon's {{Finishing Move}}s, "Moegare Toushi" for the Shining Finger and the other "Waga Kokoro, Meikyo Shisui" for just about anything God Gundam did.
* Many of the tracks of ''EurekaSeven'' are meant just as a theme music power up, be it for the heroes or the villains. Whenever Renton does anything especially awesome, a song insert, "[[http://www.youtube.com/watch?v=5SU-dCLe34s Storywriter"]] begins playing.
** The first opening song, "Days", also lends itself to a ThemeMusicPowerUp for Renton and Eureka in Episode 32.
* The ''Film/JamesBond''-ish opening theme tune in ''Anime/ReadOrDie'' kicks up at the end of the first episode of the OVA, when Yomiko and Nancy square off against Otto Lilienthal and his transforming glider.
** And whenever you hear it fire up during [[RODTheTV the sequel]], strap in tight, because someone's about to kick some major ass.
* Plenty of instances in ''Manga/{{Naruto}}'':
** In Part I, the titular character had several "[[HeroicSecondWind commence recovery and ass-kicking]]" tunes. "The Raising Fighting Spirit" was the most common, but several were held in reserve for really stand-out occasions. To beat [[ArrogantKungFuGuy Neji]], Naruto had to bust out ''three'' of these in a row ("Avenger" followed immediately by "Heavy Violence" followed immediately by "Strong and Strike").
** Rock Lee has "Utsukishi Aoi Yajuu" (Beautiful Green Beast), which starts up every time it [[HopeSpot seems like]] he is going to win a battle.
** Shikamaru has the techno song "Fake" which starts up whenever it turns out things have gone AllAccordingToPlan.
** In Part I, whenever Orochimaru's theme music started playing the other guy was screwed. The normal version meant they were merely scared half to death and weren't going to dare stand up to him; the "fight" version was reserved for horrible [[CurbStompBattle Curb Stomping]].
* In ''Manga/{{Hellsing}}'', Seras Victoria transforms into a Draculina and tears through her enemies as Suilen's beautiful, haunting 'Zakuro' plays in the background.
* In ''Anime/DragonBallZ'', when Cell goads and torments Gohan to transcend his Super Saiyan power, Gohan does exactly that, to a tune called "Demon vs. Demon" (in some translations). A fitting name, considering what Gohan basically becomes in this state. An alternate translation is "Spirit vs. Spirit"; the concepts aren't as different in Japanese as in English, but both translations fit the scene pretty well.
** In the Funimation dub which uses the music of Bruce Faulconer, almost every member of the main cast has this during either powering up, laying the beatdown on an enemy, being revealed to still be alive after being on the receiving end of a huge explosion, or really doing anything sufficiently awesome. Used A LOT with Vegeta's "Hell Bells" theme.
** In addition, in the dub of ''Dragon Ball Z'' there's a theme that plays for Goku during his first Super Saiyan 3 transformation. This music is also played during the entire Majin Buu saga whenever one of the heroes does something awesome.
** On top of that, Vegeta got such an awesome song that when I downloaded it from iTunes, it was the second-best selling Bruce Faulconer song, after the main theme. (March 2009) Oddly enough, it's called "Vegeta Super Saiyan", even though he's not always Super Saiyan when it's playing.
*** This is because Vegeta transforming to fight #19 was the scene that introduced the song
** It should be noted that Trunks previously had two insert songs, one of them used for his first Super Saiyan Transformation against Freeza.
** ''Anime/DragonBallKai'' is no stranger to this, bringing in all kinds of new songs for old characters. In particular, Vegeta gets his own insert song while powering up against Freeza, and Trunks who is definitely no stranger to insert music gets a whole new theme titled "Tatta Hitori no Senshi" for his powerup against Cell, even if it does end up a CurbStompBattle in Cell's favor, it's still a pretty badass song. It should be dually noted that both songs are sang by the person's respective seiyuu.
* The ''ShakuganNoShana'' cast get one in the climax of the fight against [[spoiler:Sabrac]] in the form of [[http://www.youtube.com/watch?v=PAaxh8OuzHk "JOINT"]] in Season 2.
* ''Manga/DeathNote''
** Whenever Light reveals how soundly he OutGambitted someone, just in case we had forgotten what a MagnificentBastard he is.
** Likewise, whenever L really gets going, his guitar theme music flares up to match.
** [[spoiler:Near also gets one at the very end of the series.]]
* "Little Busters" fills this role several times in ''{{FLCL}}'', usually when it plays during a Naota/Canti gattai.
* In ''Manga/KatekyoHitmanReborn'', there is separate theme music for "Look, someone (usually Tsuna) is no longer failing at life!" and "Oh, by the way, I acquired some new way to kick your butt. SORRY FOR NOT TELLING YOU!"...as well as everything else, to the extent that it's possible to tell what's going on just by listening to the background music.
** To be more precise, the songs are called "Shinuki Time!", "Succession", "Hibari's Theme" and "Tsuna Awakens", respectively.
* Both played straight, and played ''very'' straight by ''GaoGaiGar''. When Masaaki Endoh shouts "GA-GA-GA GA-GA-GA-GAOGAIGAR!", it's fair warning that Guy's power of ''raw courage'' is about to rip you apart. Meanwhile, Mic Sounders the 13th has a couple of songs on Disc P that ''literally'' power up any protagonist robot in earshot, restoring their energy and galvanizing their fighting spirit.
** Also, there are separate themes for the titular mecha's two big finishers, [[YinYangBomb Hell and Heaven]] and the [[DropTheHammer Goldion Hammer]]. Also, the rest of GGG's mecha get an extremely hot-blooded theme of their own when they're about to do some pretty awesome stuff.
*** The latter is heard most notably when they assault the Contra Fall, and is titled after the entire Mobile Unit: "Strongest Brave Robo Corps". There's also the J-Ark's save-the-day tune "Beautiful Wings Of Light", and the ominous guitar riffs during the opening of the Zonuda battle [[spoiler: where it pretty much wipes the floor with GaoGaiGar.]]
** GaoGaiGar FINAL has this in spades, when Chouryujin and Gekiryujin are preparing to fight against their respective Soul Master counterparts the theme [[http://youtu.be/5x-9c7OGCJ8 Saikyo Yuusha Robo-Gundan]] plays.
*** Mic Sounders 13 gets this as well as when he first fights his Soul Master counter part he invokes Disk F playing [[http://youtu.be/XS13bEKQDG8&feature=related Let's Final Fusion]] to attack with a Golden [=GaoFighGar=] MADE OF ROCK, [[spoiler: when this didn't work he used the London's Tower Bridge to play [[CrowningMomentofAwesome the Guitar solo from Power of Desire]] and cracks the enemy's Loud G-Stone]]
*** Koryu and Anryu also get a similar moment when they [[spoiler: [[CrowningMomentofAwesome Combine into Tenryujin for the first time ever]]]] to take on their Soul Master Counterpart, the song, Saikyou Yuusha Robo Gundan ''[[http://youtu.be/9LQrCSbfGGo Ladies]]''
*** Don't forget Yuuki aru Tatakai. When this piece starts, no one will survive from Guy's attacks. NO EXCEPTIONS. [[http://youtu.be/jYFYZZtnH-E Example.]][[spoiler:Sure, Palparepa gets better, but [[http://youtu.be/u-6TDhVCg18 we will have another TMPU for him shortly after (starting from 2:28).]]]]
* The ''Anime/{{Pokemon}}'' anime usually has one of the openings or upbeat endings accompany a sudden comeback (maybe even a whole battle) or evolution. "Pokémon Symphonic Medley" has been common recently, as there is no full version of the song.
** In older seasons, they'd use [[http://youtu.be/zKLcroA7V-A this]] awesome electric guitar remix of the Gym theme.
** Late in the Japanese version of the ''Advanced Generation'' series, Battle Frontier would usually start playing when Ash begins to make a comeback. Late ''Diamond & Pearl'' episodes were fond of throwing in [[EarWorm Saikou - Everyday!]] in the same situation.
** The dub did this a couple times, as well. In the match against Roark, the English ''Diamond & Pearl'' theme played. During a Contest with Dawn's rival Ursula, they played ''Battle Frontier'' (replacing the line "It's the Battle Frontier!" with "Let the battle begin!"), and the final DP episode had ''We Will Carry On!'' syncing up to the Flint vs. Cynthia battle.
* Almost the entire last episode of ''StellviaOfTheUniverse'' is accompanied by various theme music pieces, including the OP. The [[CrowningMomentOfAwesomeAnime sheer awesome]] of its GrandFinale takes more than words to convey.
** Stellvia actually uses its opening theme like this several times in the series...and the first time, it even gets subverted.
* ''{{Gravion}}'' has a theme song that plays when it combines, in one episode Sandman and the maids ''[[http://youtu.be/At9HFJ6pGdY powered the robot up by singing karaoke!!!]]''
** Sol Gravion has its own theme towards the end of ''Gravion Zwei''. The names are ''Gasshin! God Gravion'' and ''Enou Gasshin! Sol Gravion'', respectively.
* Inverted in ''Anime/ParanoiaAgent'', where the Theme Music belongs to BigBad Lil' Slugger. If it starts playing, you're ''extremely'' screwed--Slugger gets the powerup.
* ''{{Macross}}'', [[CrowningMusicOfAwesome naturally]], features a lot of this:
** In one of two of the most iconic moments in the original series is the SDF-1's assault on the Zentrandi fleet, outnumbered somewhere around a hundred ''million'' to one. The music was basically all the previous songs put back to back. Then TheMovie came around and presented "Do You Remember Love?" the track that is all but synonymous with the series and is the music for what is quite possibly one of the most awesome moments in Anime ever.
*** And don't forget about the final episode where Kamjin attacks Macross City... then the show's opening theme song starts to play as the Macross takes off one last time and blows the offender out of the sky with it's main cannon.
** ''MacrossPlus'' featured an interesting variation. The music that powers up is not the fast paced songs but [[spoiler: Myung's song, the slow tempo ''Voices'', which she uses to snap Isamu out of Sharon's illusions]].
** ''{{Macross 7}}'' puts this to the limit with ThePowerOfRock. Literally, listening to [[TheChosenOne Basara's]] singing causes creatures to regenerate [[LifeEnergy Spiritia]], something the villains suck out and causes a person to go comatose. In the GrandFinale, his power up was so awesome that it overrode the BigBad's effect of draining spiritia and helps recover all his teammates. It also featured a new song that played in no other part of the show, ''Try Again''.
*** Not true. Try Again had been played at least twice beforehand, first when Basara blasted his song THROUGH A METEOR ''without damaging it'' to save Gamlin, and again when they tried (and failed) to defeat a BrainwashedAndCrazy Gamlin.
** ''MacrossZero'' inverted this. The Song of Ruin is ''not a good thing'' for people [[spoiler: since it involves a somewhat BrainwashedAndCrazy version of Sara controlling the Bird Human, a massive thing that promptly began to raise total hell]].
** ''MacrossFrontier'' does this a lot, especially Episode 7. In Episode 14, [[spoiler:it's subverted--"Sagittarius 9PM Don't Be Late" plays as Sheryl goes into combat for the first time... only for her to be immediately shot down.]]
*** Episode 4 featured "My Boyfriend is a Pilot" (from the original series) over Alto's "final exam" in his dual with Klan Klan. What happens next is an awesome fight sequence with choreography to the music.
*** In Episode 24, [[spoiler: [[InvertedTrope it is inverted horrifically]] for the Frontier fleet, as Ranka sings "Do You Remember Love?" ''for the Vajra'', which proceed to overpower the human forces]].
*** The entirety of Episode 25 [[spoiler: is pretty much THE defining example of Macross {{Theme Music Power Up}}s, combining almost every song in ''Frontier'' plus "Do You Remember Love?"]]
* ''GenesisOfAquarion'' has a ThemeMusicPowerUp in nearly every episode (along with the usual subversion with stopping the song when the attack fails), and the last episode gets an awesome, gospel style version of the first theme song.
* ''VisualNovel/UminekoNoNakuKoroNi'': For the protagonists "worldend_dominator", "Far", and "Dread of the Grave" are all indications that a CrowningMomentOfAwesome will happen. For the antagonists it will be "happiness of a marionette", "mirage coordinator", "Golden Smile", or "Moon Rabbit's Dance".
** [[http://www.youtube.com/watch?v=cK6MK3LTGG4 "dreamenddischarger"]] takes this to another tier entirely. So does [[http://www.youtube.com/watch?v=hg9XPcPKYAQ "the excecutioner"]], but only for the BigBad.
** ''VisualNovel/HigurashiNoNakuKoroNi'''s games have it's own series of Songs, with various remixes of 'Dear You'. The instrumental version, 'Dear You - Destructive' is used during one of most Crowning Moments of Awesome, needless to say, Keiichi dodges bullets.
* ''Anime/PrincessTutu''. Admittedly, all combat is to ballet music, but you could always kind of tell who exactly was getting the power up.
* ''{{Eyeshield 21}}'' also has some examples of the "with lyrics" variety. The first appearance of "Be Survivor" comes to mind and, later "Chain of Power."
* The ''VideoGame/DevilMayCry'' [[DevilMayCryTheAnimatedSeries anime]] has a pretty cool theme song, which plays during the final episode when Dante activates his Devil Trigger to finish off the BigBad. We don't see the full Devil Trigger and the fight is over in a few seconds, but the music makes the scene an odd combination of anticlimax and CrowningMomentOfAwesome.
* ''BurstAngel'' only has this happen in the last episode, [[spoiler:when textbook DistressedDamsel Meg, [[PercussivePrevention Percussively Prevented]] by her [[HeterosexualLifePartners partner]] Jo from suicidally StormingTheCastle, finally starts to stand on her own, taking the first steps toward [[TookALevelInBadass Taking A Level In Badass]].]]
* ''ShikabaneHime'' played the OpeningTheme over Makina and Yamagami's first fight with Akasha to let them fight his horrible evilness.
* Once [[RefrainFromAssuming YOU WA SHOCK]] / [[FistOftheNorthStar Ai Wo Torimodose's]] battle remix starts playing (or for that matter, the fight alteration of "Super Survivor" or "Tough Boy"), then there's no doubt Kenshiro will bring the ultimate form of pain on the bad guy of the day. Then, after the beat down, [[CatchPhrase they are]] [[YourHeadAsplode already dead]].
** One aversion however, is Jackal, a powerless [[SpamAttack dynamite-spamming]] mook, who manages to live all through that music. And Ken was just fucking with him all that time anyway... up until Jackal calls upon Devil Rebirth.
* ''VisionOfEscaflowne'' does this sometimes. When the "Dance of Curse" starts playing expect some serious fighting.
* ''Manga/OnePiece'' has "Gomu Gomu no Bazooka!", which often plays when Luffy finishes off the villains.
** Each character has their own. If a non-Straw Hat has one, they're joining the crew.
** If you hear the instrumental version of "We Are" (The show's first theme song), the whole '''crew''' is going to be breaking out the beatdown.
** General Rule: If you are watching One Piece and ''Overtaken'' plays? Crowning Moment of Pure Awesome in the works. No exceptions.
** During the Impel Down Arc, Hannyabal attempted to invoke this by having soldiers play music at the beginning of his fight against Luffy. It didn't take.
** And even the understandably silent written Manga made a spoof reference to this. When Usopp reinvented himself as Sogeking, he quickly made up and sung his own little theme tune, which was a joke at the time. Later, he turns up to save the day, and happily sings the theme tune to himself as he shoots at the crucial group of marines. Except the change of circumstances makes readers see the song in a whole new awesome light. It came back later when Usopp "transformed" to fight with Perona.
* ''Anime/OutlawStar'' has [[http://youtu.be/pIlk_bL_Uyg CRASH!]]
* ''{{Basquash}}!'' doesn't show the usual title card or play the theme song at the start of episode seven, with the reason why being revealed at the end. It was being saved for Dan showing Rollingtown, for real this time, how {{hotblooded}} basketball is played. The theme song shows him the way.
* Nearly any fight in ''TheThird!'', most notable OneWomanWail "Sword Dancer" during first and tension rising "Storm on the Battlefield" during last battle.
* Most fights in ''Manga/TheLawOfUeki'' start the opening theme as the final attack is used, which then continues through the whole opening, even if the fight has already ended.
* In the ''Manga/BlackLagoon'' anime, various rock songs inevitably start up whenever awesomeness is about to come down. The most notable is the song "Peach Headz Addiction", which only plays when Revy lapses into [[TranquilFury Whitman Fever]].
* In the final episode of ''Manga/OuranHighSchoolHostClub'' the ending theme starts early as [[spoiler:Haruhi goes after Tamaki on the carriage on her own, even using the soft guitar opening to the song which signals the end of the episode to tease a DownerEnding,]] and the episode had a special ending to avoid repeating.
* Whenever Athena's Saints in ''SaintSeiya'' mustered their courage and [[CatchPhrase burned their]] [[BattleAura Cosmo]] beyond its limits, they'd receive either [[http://youtu.be/UGVMUQQI6Cg a full-on brass fanfare]] or a gorgeous orchestral arrangement of "Pegasus Fantasy". Asskicking of Olympian proportions would ensue.
* In Gaiking, should you happen to be hearing the sound of trumpets--it means Daiya is about to kick ass.
* ''TransformersVictory'''s opening theme music plays whenever Star Saber does something particularly awesome. Road Caesar and Landcross each have their own remixed version.
* In ''SetoNoHanayome'', San's "Song of Heroes" ''is'' a ThemeMusicPowerUp, thanks to the [[MagicMusic Mermaid's Ancient Lyrics]]. Any time San starts singing it, [[BadassNormal Nagasumi]] is about to do something impossibly badass. And then there's the time that [[spoiler: Nagasumi pulls it off ''before San starts singing'', because he's just [[UnstoppableRage that pissed off]]. The "Song of Heroes" starts picking up just as the asskicking begins.]]
* ''KeroroGunso'' example. In Episode 103, just as [[spoiler:the Garuru platoon has utterly defeated the Keroro platoon, Natsumi is down and Keroro himself has been transformed into a psycopathic frogchild version of himself, Fuyuki snaps him out of it...cue the first opening theme as Keroro rallies the troops. 3! 2! 1! FIRE!]]
* ''RevolutionaryGirlUtena: TheMovie'': "Let's go, Utena. To the outside world." ''~Oooohhhh, yeeeaahhhh...~''
* In ''Manga/SoulEater'' Soul does this quite literally, as he is able to play a ([[MentalWorld technically imaginary]]) piano to co-ordinate him and Maka with their teammates.
** Other than the Musical Assassin, there are usual examples in Kid's '...Have a nice dream' track, and Black Star's 'Never Lose Myself'.
** Black Star also has [=HarmoNIZE=].
** Soul [[spoiler:can make a keyboard out of his arm and play whatver music will make a person go insane]].
* In the ''Mazinkaiser'' {{OVA}}s, whenever Kouji lays the pain down his opponents, the song ''Mazinkaiser's Theme'' starts playing, though it's the short version. In the final episode, "Decisive Battle! Burning Hell Castle", the ''full'' version of it is played the moment Mazinkaiser unleashes Kaiser Blade and doesn't stop until he delivers the final blow onto Hell King Gorgon.
** ''ShinMazinger'' manages to pack three one after the other in the final episode, as the second opening, second ending, and finally first ending play in sequence over the final battle.
* ''Anime/TekkamanBlade'': When Blade receives his Blastor power up, ''Eternally Loneliness'' starts playing. Blade proceeds to send Lance running with his tail between his legs, before blowing him up with a souped up Voltekka. The same Lance that spent the better part of episode bragging about how he was superior in every way.
* 00 Gundam from ''Anime/MobileSuitGundam00'' initially failed to reach optimal operating conditions in light of an impending attack on the Gundam Meister's ship (Season 2, Episode 2). 00 Gundam gets its own semi-acoustic version of the soundtrack by the same name as Setsuna activates Trans-Am, thereby forcing the Gundam to reach a stable operating state. This results in all parties present pausing to admire the flash of emerald light and marvel at the Twin Drive system. The music starts up in earnest and 00 Gundam proceeds to rape the attacking "Ahead" mechs.
** Also in season two, "Trans-Am Raiser", and the movie had "FINAL MISSION! QUANTUM BURST!" Whenever those two start playing, lots of stuff blows up at a constantly increasing rate.
* Anime/CowboyBebop: In the final episode as [[spoiler:Spike goes on a rampage against Vicious and his former crime syndicate]], the next five minutes of awesome are shown with "See You Space Cowboy", an arrangement of "The Real Folk Blues", playing in the background. CrowningMusicOfAwesome with saxophone and piano!
* In ''{{SD Gundam Force}}'' Episode 52, the 3rd opening theme ''Taiyou Ni Kougarate'' plays when the heroes begin their ultimate attack on the BigBad
** Also, in just about every episode, the battle is resolved by the kid getting excited, which activates the Soul Drive, which starts the trumpet solo, which gives the Gundams the power they need to save the day.
* The second anime of ''Manga/FullmetalAlchemist'' has the fight against Sloth, where Olivier Armstrong is [[spoiler:cornered and [[LargeHam her brother]] gloriously saves her with his supreme manliness complete with an epic theme song that could only be described as the Armstrong national anthem.]] The exact same thing happens a few moments later when [[spoiler:Izumi's husband and aforementioned brother meet for the first time]].
* ''Manga/ShamanKing'' poses a subversion in [[spoiler:the final fight, where all main characters are fighting the villain Hao/Zeke, and the main theme starts playing. Everyone is sure Hao is going to get his powered-up rear kicked, when the song suddenly stops and the tide is turned, changing the song to Hao's fighting theme]].
* ToAruMajutsuNoIndex has [[http://youtu.be/Bf-us97tuvg "Jellyfish"]] by Mami Kawada. This plays when Index is alone and Sherry Cromwell's Golem attacks her. [[spoiler: Index then goes on to show that even in her normal mode she is able to call upon the power of the 103,000 grimores she has memorized and [[CrowningMomentofAwesome easily repels the Golem's attacks]]]] until Touma comes along and cancels the whole summoning.
** Also, [[http://youtu.be/Qx6YL1ld0iY Gensou Koroshi (Illusion Killer/Imagine Breaker)]] is Touma's [[ExactlyWhatItSaysOnTheTin trademark music for whenever he does something awesome]].
* ''Manga/ACertainScientificRailgun''
** We have [[http://youtu.be/eGAA4IFEPb0 "only my railgun"]], which plays when Misaka faces the AIM Dispersion Field beast by giving a [[CrowningMomentOfHeartwarming pep talk]] to [[IKnowYouAreInThereSomewhereFight the part of Saten's consciousness inside the beast]]. Kiyama-sensei even expressed awe at how much more powerful Misaka could be when fighting seriously. "This is...Level 5..."
** Also at the end when they [[spoiler: defeat Telestina and save Kiyama-sensei's kids. The same Saten-san who needed the pep talk before became the [[BigDamnHeroes big hero]] by delivering a ShutUpHannibal to Telestina and smashing the [[PowerNullifier Capacity]] [[GratuitousEnglish Down]] with her baseball bat.]]
** From the same episode, the second OP [[http://youtu.be/SDwJuD77KHU "LEVEL5 -judgelight-"]] plays during [[spoiler:Misaka vs. Telestina's HumongousMecha during the highway chase]].
** Episode 24 of Railgun S takes this UpToEleven, with a total of ''four'' instances. The first one is [[http://www.youtube.com/watch?v=lS2WAYo1mGw "Sister's Noise"]], which plays when Judgement engages an army of powered suits. Then, [[http://www.youtube.com/watch?v=byg2m5LuGd8 "Eternal Reality"]] kicks in when, just as things were starting to look bad, [[BigDamnHeroes Yomikawa appears out of nowhere]] in a HumongousMecha. After that, when a large missile capable of destroying the city is fired, [[http://www.youtube.com/watch?v=LL_vcptPyFA "Future Gazer"]] begins playing when, with some help from the Sisters, they make a plan to intercept it. And, last but not least, "LEVEL5 -judgelight-" kicks in as [[CrowningMomentOfAwesome the aforementioned mecha (with Misaka and Kuroko in the cockpit) is launched into orbit, and Misaka uses it as ammo for a super-powered railgun attack to destroy the missile]].
* The North Maiden of StarDriver always starts to sing before that episode's giant robot battle.
** With her being [[PutOnABus put on a boat]] resident GenkiGirl Mizuno seems to have taken over for her.
*** And now with Mizuno leaving, TMPU has fallen to the East Maiden [[spoiler: Keito]].
* In ''Manga/TheWorldGodOnlyKnows'', the opening theme plays when Keima goes into God of Conquest mode in episode 12 of Season 1.
* The final battle (against TheRival Papillion) in BusouRenkin is accompanied by the title theme. It is, like their first fight, fast paced and impressively choreographed, even if it is more down to earth than the fights involving gravity manipulation and HumongousMecha.
* When [[GetterRobo Shin Getter Robo uses Stoner Sunshine against Shin Dragon]], a BadAss ThemeMusicPowerUp [[http://youtu.be/92-iROXtd6A starts up raising the level of epicness in the scene.]]
* When they made [[VideoGame/SuperRobotWars Super Robot Wars Original Generation]] into an anime, this was guaranteed to be in effect. The most notable occurrence is in the second series ''The Inspector'' when [[EmotionlessGirl Latooni]] and [[RoyalsWhoActuallyDoSomething Schine]] debut their [[HumongousMecha Fairlions]] to the tune of a vocal version of [[http://youtu.be/DWyisPlDsbs ''Dancing Faeries'']], their shared theme.
* In ''Anime/NerimaDaikonBrothers'', the titular band often sings a revised version of their theme song with lyrics adjust for the villain whose butt they're about to kick. It's basically a show rule that if the theme song's not playing, they're not about to win.
* The Meaning Of Truth, the theme of the ''VideoGame/{{F-Zero}}'' anime, starts up during that famous scene at the end, where [[spoiler:Captain Falcon jumps out of his Blue Falcon and [[MegatonPunch FALCON PUNCHES]] Black Shadow to his death.]]
* ''Manga/BlackButler'' has a discordant version of "[[IronicNurseryRhyme London Bridges Falling Down]]" play during Sebastian's final battle with [[spoiler: [[BigBad Ash/Angela]]]] at the end of the first season. Seriously. [[ItMakesSenseInContext And in context]] ''[[CrowningMomentOfAwesome it was awesome]]''.
* Anime/PantyAndStockingWithGarterbelt plays "Fly Away (Now)" during pretty much any scene which tops the awesomeness of the previous scene in which "Fly Away (Now)" was played.
** It is fairly common before Episode 5, but afterward becomes less and less common until the ClimacticBattleResurrection at which point you will cheer and applaud when it plays.
* ''Zoids: New Century Zero'' has [[http://youtu.be/KjK0HusMU7Y Strike Lazer Claw]]!
* Happened a few times in ''SonicX''. Exactly ''which'' theme song it was varied.
** The first (Japanese) episode has a great moment when he shows just how impossible it is for the police force to match his speed... by running BACKWARDS at over 300MPH, and a grin to match as the opening theme starts up. When he [[turns it up to eleven]], the music stops dead... as he suddenly flashes past the team's nitrox-boosted leader at well over 700 MPH. (The dub replaced this epic scene with some blah background...)
* In ''Anime/StreetFighterIITheAnimatedMovie'', Ryu and Ken's FinalBattle against M.Bison is set to "[[http://youtu.be/NxhI3H1UNRU Itoshisa To Setsunasa To Kokoro Tsuyosa To]]." This was, in a way, foreshadowed by the encounter between Chun Li and Vega, where an instrumental version of said theme shifts the horrible beatdown to the [[CurbStompCushion heroine's favor]], she still won though.
* ''[[Anime/{{Persona 4}} Persona 4: The Animation]]''. It is the dead of night. All hope seems lost. Yu is alone, beaten but not defeated. All his efforts have been in vain, and it seems nothing he can do will help him overcome. But then he stands, determination burning in his heart. He rallies his strength and summons the [[VideoGame/{{Persona 4}} original game's]] battle ThemeTune, "Reach Out To The Truth," and he ''faces out'', he ''holds out'', he [[spoiler:[[FishingMinigame casts his fishing line]] and [[ThatOneSidequest finally catches]] [[TheCatfish the Guardian]]]].
* In ''Anime/RentalMagica'', when Itsuki removes his eye-patch, the music starts, and he says a variant of, "This is an order from the President!" asskicking will commence. [[spoiler: Except that one time in the last [[AnachronicOrder chronological episode]], where he [[GenreSavvy abused]] it just to get them to listen]].
* When ''Manga/{{Fairy Tail}}'s'' "Dragon Slayer" starts playing, expect much ass kicking and property damage to ensue. This theme tends to be reserved for the seriously close fights; for more standard epic beatdowns, they use Natsu's Theme. Don't forget "Fairy Tail Main Theme" and "Dragon Force". Whenever those 2 play, major ass-kicking is about to ensue.
* ''Anime/RurouniKenshin'' has an unusual example of this trope. Kenshin's personal kick-ass music is an acoustic guitar theme that plays whenever he does something {{badass}}. Which is very fitting considering the character.
* ''IrresponsibleCaptainTylor'' likes to [[PlayingWithATrope play with this]]. Whenever StraightMan Lieutenant Yamamoto tries to do something awesome and profound, his theme song starts up--a militaristic, MusicToInvadePolandTo-ish piece that brings to mind ToshiroMifune's samurai-era masterpieces. Only for it to, inevitably, be interuptet by Tylor's easygoing comedy-movie-style theme when Tylor interrupts his badassery with something utterly stupid that nonetheless somehow manages to save the day. He even manages to throw down the occasional RecordNeedleScratch, usually followed by a few seconds of complete silence while everybody in the area stares at him in gobsmacked disbelief.
* In ''Anime/PuellaMagiMadokaMagica'', Mami has a [[http://www.youtube.com/watch?v=0QEa4TiHDBA pretty awesome one]] when transforming into her magical girl outfit.
* ''{{Gunbuster}}'' plays it straight when the Buster Machine rises from Exelion while the Gunbuster March plays. And then, in ''{{Diebuster}}'' [[spoiler:this is played with when Nono begins singing the original show's theme song prior to her transformation sequence, subverted when the space monster erupts from Titan and the Gunbuster March begins playing prior to changing to a more sinister theme, and finally played completely straight when the real Gunbuster March plays as Buster Machine 7 warps in to save the day]].
* Several characters in ''Anime/FinalFantasyUnlimited'' are subject to this.
* We get a very literal example in ''Anime/SenkiZesshouSymphogear'' in which Symphogears are actually activated by the girls singing their theme songs.
* In Fooly Cooly (or Furi Kuri or FLCL) [[http://www.youtube.com/watch?v=KhNN9GIbsS0 Little Busters]] plays every time Nao merges with Canti, becoming Atomsk, and most other times Atomsk appears to save the day.
* Played straight in CrushGearTurbo. Interestingly, being a shonen show, the Theme Music Power-Up also applies to the ''rivals''.
** [[http://www.youtube.com/watch?v=oihWsaRBtws&t=1m10s Those Who Possesses Wings]], Garuda Phoenix's Theme.
** [[http://www.youtube.com/watch?v=MiV7H9deZug Shocking Appearance]], Gaiki's Theme.
** [[http://www.youtube.com/watch?v=OOxFSlSqAsM&t=1m19s Black Eagle]], Black Garuda Eagle's Theme.
* There must have been some kind of clause in the developmental contract for ''Anime/ValvraveTheLiberator'' that this had to happen at least every other episode. Because this happens ''a lot.''
* ''Anime/SpaceBattleshipYamato2199'' usually plays it straight, with the appropriate triumphal music playing every time the ''Yamato'' is kicking someone's ass, but also features a rather curious inversion when the [[spoiler: White Comet Empire]] gets an EarlyBirdCameo with their theme song playing and is [[CurbStompBattle curbstomped]] by Domel.
* The instrumental version of "Ai wo Torimodose" from ''FistOfTheNorthStar''. If you hear it start up, it means you were already dead.
[[/folder]]

[[folder:Fan Works]]
* In ''WebAnimation/ZanyToTheMax'', whenever the Warners drink Acme Super Carrot Juice, they spin around while the theme song plays before they get their super powers and "Animeniesque" appearances.
[[/folder]]

[[folder:Films]]
* The director's cut of ''TheExpendables'' has "Diamond Eyes" playing in the climax of the film as the eponymous team charges into the courtyard, shooting and tossing hand grenades left and right. In the theatrical version, it was a LongSongShortScene situation despite Sylvester Stallone personally commissioning the song for use in the film.
* Subverted ''twice'' in a very short time in the LordOfTheRings film ''Return of the King.'' After the Riders of Rohan and Gondor coalition forces have routed the orc forces, and the king has shouted "Make safe the city!", the triumphant music abruptly [[http://youtu.be/z-klKeZG69I&feature=related fades away as the audience hears what sounds like a distant rumble of thunder,]] and swiftly turns includes the bellows of the towering Műmakil war-elephants-on-steroids and the warchants of their riders, the Maori-reminiscent Haradim.
** However, the music returns as a counter charge is ordered, and the cavalry make yet another music-backed charge to the line of Műmakil...only for the music to be cut off as if someone pulled the plug from the sound system, or if the orchestra themselves had fled the battlefield upon realizing what a terrible idea charging fifty foot elephants with horses was. Incidentally, the music is cut off at the exact moment that one of the warbeasts swings its tusks, sending a horseman screaming into the air, then smashing more aside with its feet. It takes another few minutes (film-time) before anything resembling victory seems possible...''and then the Nazgűl, including the Witch-King, show up.''
** Played straight a little earlier; when Aragorn grasps hold of Andúril for the first time, his personal theme music swiftly switches from a bouncy Fellowship-based ditty to a roaring orchestral King of Gondor crescendo.
** King Théoden gets one when he declares that [[GondorCallsForAid Rohan will fight alongside Gondor]].
** At the start of the Battle of the Black Gate, you can hear a full orchestral version of the Fellowship theme as Aragorn and the men of Gondor and Rohan charge against the armies of Mordor. However, they know it's a hopeless fight, and that's indeed what the theme (and the Elvish lyrics to go with it) means: that they're making a HeroicSacrifice to give Frodo a chance to destroy the Ring.
* The main theme of ''Film/OnceUponATimeInChina'' plays whenever Jet Li's heroic lead, Wong Fei Hong, takes on the forces of evil in said-movie-series.
** It's traditional to use that for Wong Fei Hung's theme song in any movie about him. Example: Jackie Chan's Drunken Master plays it when Fei Hung is winning his fight against the BigBad.
* In Creator/QuentinTarantino's ''Film/KillBill'', whenever the theme from Ironside starts playing, the Bride is about to go completely vicious on someone.
* ''IndianaJones'' has his distinctive theme play whenever he does something Especially Awesome.
** Said theme was so awesome that ''TurkishStarWars'' shamelessly stole it and used it for Every. Single. Freakin'. Fight scene.
* ''Film/JamesBond'' is in the rare and enviable position of having ''two'' [[ThemeMusicPowerUp Theme Music Power Ups]] -- the "James Bond Theme", and the music from the opening titles of each movie. See the [[http://youtu.be/2WgVUzVxUkM pre-credits sequence]] from ''Film/TomorrowNeverDies'' for a particularly badass example. On the other hand, if the opening song is a ''VillainSong'', Bond had better watch out when it starts playing on the soundtrack. Example: Film/GoldFinger's [[CrowningMomentOfAwesome aerial raid on Fort Knox]], set to a thunderous version of his TheVillainSucksSong.
** Two examples that simply '''must''' be mentioned:
*** [[http://youtu.be/oMX7_z4ixFQ Bond re-entering the scene]] in a ''tank'' by taking the shortest route ''through'' a concrete wall in ''Film/{{Goldeneye}}''.
*** ''[[Film/CasinoRoyale "The name's Bond... James Bond."]]''
** And then there's Bond's ''other'' theme song, [[http://youtu.be/V-5f8IWXCTI the 007 Theme]] from the ''Film/FromRussiaWithLove'' soundtrack. Pretty much any time this music comes on, you know something's about to be beaten up or blown up. It was used to particularly great effect in the "Little Nellie" sequence in ''Film/YouOnlyLiveTwice'', as well as the air assault on Blofeld's rig in ''Film/DiamondsAreForever''.
* In the ''Film/{{Spider-Man}}'' films, Spidey's action scenes are usually accompanied by his distinctive {{leitmotif}}. The villains also get their own theme music. In climax of the third one, Spider-Man's theme gets very noticeably cut off whenever the villains get the upper hand.
* "Holding Out for a Hero" in ''Short Circuit 2''; for those too young to remember that one, it was also in ''Shrek 2''. With full orchestra support from Harry Gregson-Williams in the latter case.
* At the end of the ''Mission Impossible'' movie.
** Even better in the second one, when [[spoiler:the hero is dead and the villain victorious (complete with his own music rising to climax), only to change abruptly to the hero theme as we see that he (and we) have been deceived.]]
* Right towards the end of the 'Film/TheMatrix'', when Neo becomes [[TheChosenOne The One]], and is seeing the "code" for the first time. One-handed kickassery follows.
** Most people will never be able to hear The Propellerheads' "Spybreak!" without thinking of the lobby shootout scene again.
* The ''Film/{{Rocky}}'' movies are no doubt well-known for their sudden comebacks, almost always accompanied by one of Rocky's many theme tunes. Usually, just as the finishing blows are made, the music builds to a dramatic climax. This is no more evident than in the fifth movie (otherwise not worth the time) where, as Rocky lies concussed in the streets during a brawl with Tommy Gunn, he goes into an almighty hallucination, remembering his dead trainer Mickey before finally snapping out of it as Mickey screams at him "Get up, you son if a bitch... 'cause Mickey loves ya." The music swells as Rocky rises again... then it suddenly bursts into a weird ghetto remix.
* Parodied in ''Film/KungPowEnterTheFist'', where one of Master Betty's minions plays music on his boom box, to which tune Betty pummels his victim.
** "By the way, you must beware of Betty's iron claw. They are sharp, and they hurt. And beware his song about big butts, he beats people up while he plays it!"
** And in the final showdown, the Chosen One throws a shuriken at the boom-box, causing it to start playing the Ram Jam version of (probably) Huddie "Lead Belly" Ledbetter's "Black Betty".
* Sometimes done just before a scene's climax, when the heroes have the upper hand and the enemy hasn't made his final play yet -- such as in the ''Film/ScoobyDoo'' movie, where a remix of the classic theme plays for a while before the gang really winds up in trouble.
* "Secret Agent Man" playing in the final battle of the first ''AustinPowers'' movie may qualify; again, it dies down before Austin's final confrontation with Doctor Evil.
* Backs up the Guarani a couple times in ''The Mission''. Sadly, [[HopeSpot it is not quite enough]].
* The first twenty seconds of the track "Beelzeboss" from ''Tenacious D in the Pick of Destiny'' act as a ThemeMusicPowerUp for [[{{Satan}} the Devil.]]
* At the end of ''PiratesOfTheCaribbean: Dead Man's Chest'', Jack Sparrow's confrontation against the kraken is made even more awesome by the remix of ''He's A Pirate'' that plays during it.
** And then abruptly turns tragic as the heroic strings drop into a dying fall... just as the ''Black Pearl'' is pulled beneath the waves.
** Probably averted in the first PiratesOfTheCaribbean film. Jack Sparrow's first scene in the film is standing on the mast of his sinking ship, and yet the music that scores this scene is unabashedly heroic (and serious to the point of self-parody).
*** Unaverted in ''PiratesOfTheCaribbean:At World's End'', when Jack Sparrow comes over the sand dunes in Davy Jones' Locker in a reference to his first entrance.
** The sinking of the Endeavour
* ''Film/{{Excalibur}}'', which popularized "O Fortuna".
* ''StarWars'' has a general rule: if the [[http://youtu.be/HcZ9kQ1h-ZY "Force Theme"]] is playing, it's because the characters are doing something epic. If the ''title'' theme plays, it's because they're being just plain badass.
** ''Film/{{Return Of The Jedi}}'' gives Luke a big ThemeMusicPowerUp in the Sarlacc pit scene.
** The Emperor gets one as well when his rather creepy theme plays as he [[ColdBloodedTorture electrocutes Luke with Force lightning]]. Has elements of TheDayTheMusicLied, though, since that's when [[spoiler: Darth Vader returns to the Light side of the Force and saves Luke.]]
** Also, of course, there is a general rule in all StarWars films that if you can hear Imperial March, it means TheDragon is being awesome again.
** Even detractors of the StarWars prequels admit that one of the coolest moments in the series was near the climax of ''ThePhantomMenace'' when just as the heroes are ready to flee the scene, a door opens, a cloaked figure appears (Darth Maul), and the first few notes of the [[http://youtu.be/bPLXwrj7i7Q "Duel of the Fates"]] theme are heard.
** In the original film, the power up music comes at an interesting moment: when Luke shuts off his targeting device the score shifts from tense to triumphant. It means he's decided to trust the Force and is on the path to becoming a Jedi. Actually blowing up the Death Star is just a detail.
* Mr. Mistoffelees on the filmed version of ''Cats''. His song, though enjoyable, is so odd and repetitive and full of praise that it seems he's doing the song mostly to get the crowd to [[ClapYourHandsIfYouBelieve believe in his powers]] so he can actually ''do'' anything.
** However, since the song is actually performed by Rum Tum Tugger, it could be argued that Tugger is actually trying to convince Mistoffelees that he can [[YouAreBetterThanYouThinkYouAre do the magic that needs to be done]].
* When it's time for a dogfight, what's the first thing the hero does in ''[[http://www.imdb.com/title/tt0091278/ Iron Eagle]]''? Put some rock into his tape deck, of course.
* In ''Film/GodzillaFinalWars'', Godzilla's new theme "King of the Monsters" kicks in just as he blasts off one of Keizer Ghidorah's heads after being revived by Ozaki in the Gotengo. Godzilla then proceeds to utterly destroy Ghidorah by tossing him into the air and blasting him with a spiral beam.
** A possible subversion or inversion could be the laughably quick death that the American Zilla receives from the true Godzilla while the English (but not American) song "We're All to Blame" plays over its fight.
* In ''Film/GalaxyQuest'', at the end of the movie, the real ''Protector'', with the cast members on it, crash-lands at a ''Galaxy Quest'' convention. The film's BigBad, Serris, is still alive -- until he's shot, in full view of the entire convention audience, by "Commander Peter Quincy Taggart". The film's triumphant theme music plays. It's over. However, in the beginning of the movie, the guy was a pure egotist, basking in the spotlight at appearances and so on. Now, he's learned his lesson, and he invites the crew up to take a bow. When this happens, the music switches to a higher, remixed triumphant version with plenty of choir -- the Commander's won the ''real'' battle. The movie ends there.
* ''Iron Man'' had great fun with this, playing the driving guitars of the hero's theme and then stopping the music abruptly when circumstances changed. Best example would be [[spoiler:our hero taking out a group of terrorists and flying along with music blaring until he takes a tank round to the face and crashes. He stands up, fires with disdain a tiny little rocket, and turns around to walk away. Looking back, we see the tank explode dramatically and the music picks up right where it left off.]]
** And the literal powering up scene. Stark has decided enough is Enough and decides to go to settle the situation in Gulmira, personally. As Stark stands in the middle of his workshop the floor opens up and numerous robot arms apply his Mark III armor, now with iconic red and gold scheme. The track that plays is appropriately titled "Iron Man", on the soundtrack by Ramin Djawadi.
** Similar moment, although with a different soundtrack, in Iron Man 2, accompanying the racetrack fight.
* "[[YorTheHunterfromTheFuture Yor's world, he's the man!"]]
* Two moments from ''Film/StarTrekFirstContact'' spring to mind: the battle against the Borg cube at the start of the movie, where the ''Enterprise'' [[GunshipRescue swoops to the rescue]] to the sound of an absolutely ''epic'' [[http://youtu.be/miaOx3UrLA4 fanfare]], and the fight on the deflector dish, where each time the Borg gain the upper hand, a more thunderous version of their {{Leitmotif}} [[http://youtu.be/OWxOCuk6rMs plays]].
** In ''[[Film/StarTrekIITheWrathOfKhan The Wrath of Khan]]'', we get ''three'' power-ups: Once when the Enterprise leaves its dock, one for Khan during his surprise attack, and again for the Enterprise during the LockAndLoadMontage.
* Pretty blatant in the climactic fight scene of ''OnlyTheStrong'', a 90's action film about capoeira (a Brazilian martial art): [[spoiler:the main character is about to be killed by the BigBad, when all of a sudden the main character's students (who are watching the fight, along with the Big Bad's minions) start singing the capoeira song he had taught them earlier in the film. This gives our hero the energy boost needed to fend off his opponent, then royally kick his ass.]]
* Whenever [[TransformersFilmSeries Optimus Prime]] enters the big ending battle in both movies, the music soars as Prime either [[TechnologyPorn epically transforms]] or [[spoiler: gets new armor, weapons and flight capability donated from the deceased Jetfire.]] Both complete with a one-liner to emphasize that yes, this is awesome.
-->"Let's roll!"
* Just before the 'two against five' sequence in ''Film/TheGoodTheBadAndTheUgly'', a burst of the theme music plays as Blondie asks Tuco "[[YouAreNotAlone Were you going to die alone?]]" and joins him to fight Angel-Eyes' men.
* Happens subtly in ''Film/StarTrek''. If you hear a snippet of the main riff from "Enterprising Young Men", ass-kicking will soon ensue. Especially egregious when Sulu [[LetsGetDangerous gets dangerous]].
* In ''Film/{{Halloween 2007}}'' (2007), Michael gets better from his sister stabbing him through the shoulder and recovers his discarded mask when his "stalking" theme starts up.
* In ''BeverlyHillsNinja'', there is a fight with the obligatory Kung Fu Fighting by Carl Douglas. When the fight gets more intense, it hilariously speeds up.
* ''TheManWhoSavesTheWorld'' is really shameless about this. ''Every single time'' the hero starts winning a fight, his music starts playing. The real kicker is that his music is just the ''IndianaJones'' theme.
* ''Film/OnceUponATimeInTheWest'' Sergio Leone is pretty good at this, especially in OUATITW, where Charles Bronson has one of the best themes ever associated with a movie protagonist. The spooky sound of the hamonica accompanies his raging revenge through the movie, and every time you hear it you know that he'll do something awesome.
* When watching the original 1989 ''Film/{{Batman}}'', the minute you hear any version of Danny Elfman's classic Batman theme, there's gonna be some kicked ass. No questions asked.
** This applies to Film/BatmanReturns as well.
** This also happens in the Nolan films. Zimmer's Batman anthem is maybe less memorable than Elfman's, but it's always there when Batman kicks serious ass (listen to the score in the "Swarm of Bats" scene from Film/BatmanBegins).
* ''Film/ConanTheBarbarian1982'' by BasilPoledouris.
* Quite a few times in ''Film/RoboCop1987'', score also by BasilPoledouris. [=RoboCop=]'s leitmotif plays when he [[HesBack goes out on his first patrol]], when he [[DrugsAreBad shoots up a drug lab]], during his [[DavidVsGoliath fight with the robot [=ED-209=]]], and the FinalBattle with [[ItsPersonal the gang of criminals who murdered him]]. It also starts playing right before segueing into the credits after he saves the day just to show how awesome he is.
** Inverted in the ParkingGarage scene where his theme appears in a sad, minor-key version [[spoiler: because the entire Detroit police force has turned on him and is firing at him while he struggles to defend himself]].
* If the song [[http://youtu.be/AkN8bR8zSzA "We Are Sex Bob-Omb"]] can be seen as ''ScottPilgrimVsTheWorld'''s theme, he definitely gets a power up from it [[http://youtu.be/UvqzWHvrZiA&t=0m41s before the final fight]]. [[http://youtu.be/UvqzWHvrZiA&t=7m10s Twice]].
** Bonus points for the song being [[SorryILeftTheBGMOn played by Scott's band both times.]] If that's not the PowerOfFriendship, I don't know what is.
* In ''Film/{{Gladiator}},'' General Maximus has a driving, forceful orchestral battle theme only heard twice, once on the German battlefield and once in the Colosseum. In both moments he is leading armies to victory like a true frontline general.
* The music in ''Film/{{Thor}}'' kicks into high gear when the eponymous hero[[spoiler:'s powers are restored at the end and he]] proceeds to kick major ass. Also kicks into high gear as his father Odin uses ''his'' powers [[spoiler:and prepares to banish Thor from Asgard.]]
* Blatant in JimmyNeutron: TheMovie - whenever he starts implementing a new plan, or is in the middle of using ANY invention for WHATEVER reason, a variation on his theme tune starts playing. Yes, even when he's just getting ready for school. Either that, or some new-wave, boppy, pop song comes on (as evidenced during the defeat of the Yolkians in the arena).
* The ending of the original ''Film/DawnOfTheDead''. The main guy is trapped in a room with a hoard of zombies about to come in. He gets ready to kill himself, but he suddenly turns the gun around and shoots a zombie instead. Cue the cheesiest patriotic fanfare you can think of as he pushes zombies out of his way and runs to escape with the main girl. It's a good thing that music came out of nowhere and made the zombies completely ineffectual, or it would have really been a DownerEnding, which is actually what the original script called for.
* Film/KickAss, Hit-Girl and "Bad Reputation"; exactly as it says in the title ensues.
* Invoked in Film/TheAvengers: When Iron Man arrives on the scene, he hacks the nearest speaker system (which happens to be Black Widow's jet) to play Music/{{ACDC}}.
** Later on in the film, we hear a triumphant version of the film's main theme once the Avengers finally assemble as a team for the first time during the climax in New York.
* Happens in ''Film/JurassicPark'' during first film's [[CrowningMomentofAwesome crowning moment of Tyrannosaurus]].
* Whenever the main theme is playing, something awesome is happening in ''Film/PacificRim'', but one of the best examples is when Cherno Alpha and Crimson Typhoon are destroyed, Striker Eureka is disabled, all hope is lost... and then the rebuilt Gipsy Danger arrives to ''kick ass.''
* ''Film/TheLoneRanger'': When [[CrowningMusicOfAwesome the classic Lone Ranger theme]] starts to play, you know things are about to get real!
* In ''Film/{{Superman II}}'', a supposedly-depowered Superman literally [[KneelBeforeZod kneels before Zod]], takes Zod's hand as if to surrender and swear loyalty... then crushes his hand and tosses him into a pit [[http://www.youtube.com/watch?v=jUORL-bvwA0 as the John Williams theme plays.]]
* In Film/ConAir Cameron Poe's fight with both Cyrus and Billy also during his run/drive in the boneyard.
[[/folder]]

[[folder:Literature]]
* An affectionate parody: Acheron, the Atlantean god-turned-vampire warrior of Sherilyn Kenyon's ''[[TheDarkHunters Dark-Hunters]]'' series, has "Sweet Home Alabama" for his theme music.
* Literature/ArtemisFowl sometimes has Plotting Music in his head when he's coming up with his plans. It's generally classical, like [[http://youtu.be/s8eigkwmMEo Beethoven's Symphony No. 7]].
[[/folder]]

[[folder:Live Action TV]]
* ''XenaWarriorPrincess'', as sung by the Bulgarian Women's Choir.
* Numerous examples in ''Franchise/PowerRangers'' in all of its incarnations. For example, after Tommy lost his Green Ranger powers in the first season, yet proceeded to fight off Goldar anyway (to the tune of "Go Green Ranger Go").
** Theme Music Power Up is the only context where we get to hear the original Power Ranger theme with ''lyrics'' in its verses. ("No one will ever take them down / The power lies on their si~i~i~i~i~ide! / Go, go, Power Rangers...") Giving a previously instrumental theme some lyrics, when done right, seems to give a power-up ''to'' the theme music.
** Particularly, in the crossover episodes, the visiting team gets the theme music for the previous season when they escalate. In ''Operation Overdrive'''s "Once a Ranger", we're treated to five earlier incarnations of the theme music, cleverly mixing together (Well, four; for some presumably legal reason, Adam gets a new theme song rather than the original "Go, Go Power Rangers" theme.).
** A notable non team up example happens in Lost Galaxy right after the Rangers [[http://youtu.be/DChIkG0PwT4&feature=related receive the Lights of Orion.]]
** Some ''Power Rangers'' series have also inverted this trope, giving Mooks like the Cogs and Tenga theme music when they fight the Rangers. They almost always lose.
*** This happened in Sentai too, dating [[OlderThanYouThink all the way back to Goranger]], with "Akuma no Kurojuujigun" being the theme of the Kurojuujigun.
** At times in ''Wild Force'', if there were no music during a Ranger fight, you know they're going to get whupped.
* Happens in ''Franchise/SuperSentai'' too... although ''Series/ChikyuuSentaiFiveman'' [[http://youtu.be/yuYPrmUWQFk took it too far.]]
** ''Series/KagakuSentaiDynaman'' had this to the extreme, with an opening theme made to sync to the FinishingMove, the Super Dynamite.
** ''Series/TokusouSentaiDekaranger vs. Abaranger'' ended up ''[[LampshadeHanging Lampshading]]'' the whole thing:
-->'''Jasmine:''' Please excuse me. ''(place hand on Ryouga's hand)''\\
'''Narrator:''' ''(while clipshow of Abaranger goes on)'' Jasmine is an [=ESPer=]. Whoever she touches, Jasmine recaps his memories.\\
'''Jasmine:''' Seems true for now. I have my doubts for them though -- ''(walks to the camera)'' -- ''[[DancingTheme Aba-Aba-Aba-Aba-Abaranger!]]''\\
'''Umeko:''' What the heck was that?\\
'''Jasmine:''' Don't know either. It was on loop in his brain.
** Happens in the opening fight scene in ''Series/SamuraiSentaiShinkenger'', and on the same footage in the OriginsEpisode of ''Series/PowerRangersSamurai''.
** ''Series/KaizokuSentaiGokaiger'' takes this concept and runs with it. As an anniversary series for the franchise, the Gokaigers not only get a ThemeMusicPowerUp from their own theme, but the theme music of whatever past sentai team is getting spotlighted that episode.
** TokumeiSentaiGobusters uses this trope to great effect in the second half of the series. Despite it having been replaced by a new theme song by that point, the show still uses the original theme song for its climactic battles.
** ZyudenSentaiKyoryuger did this [[spoiler:in the final episode. It's Earth's true Melody]].
* ''Series/TheATeam'' theme tune, during each episode's ATeamMontage.
** Has been lovingly taken up by TopGear, who have used it repeatedly when doing something particularly A-Team-y to their vehicles. Has gotten to the point that Clarkson sequed into an ATeamMontage by saying, "And then it was time to cue the music ..."
* ''Series/KamenRiderDenO'' has a different version of "Double-Action" for each of Ryotaro's five forms. Ryuutaros, however, takes it a step further. He gets a hip-hop remix of the show's ThemeSong and the above mentioned "Double-Action", that play almost every time he shows up. This includes when he's stalking rival Sakurai Yuuto. Speaking of, Yuuto and his partner Deneb get their own theme music, called Action-ZERO.
** All {{Toku}} use this trope to one degree or another. [[GrandFinale Grand Finale]]s usually involve the "series Theme Song" variant, while the debut of [[SixthRanger Sixth Ranger]]s usually gives them a specialized theme. [[MerchandiseDriven This may be to sell the soundtracks]].
** Though it doesn't quite fit under a category, when one of the Riders in ''Kamen Rider SPIRITS'' is about to have a nice big one-against-all-of-his-monsters-of-the-week-ever battles, the lyrics to an appropriate theme song are written out on the page (V3's sequence is notably impressive).
** Especially powerful in Kamen Rider BLACK's final episode when [[spoiler: Kotaro powers up with Long Long Ago 20th Century in the background to fight his brother, Shadow Moon one last time.]]
** "W-B-X ~W-Boiled Extreme~", the theme song for ''Series/KamenRiderDouble'', plays exactly three times during the series: during the fight where the Riders finally get the upper hand on [[TheDragon the Weather Dopant]], in the penultimate episode when [[spoiler:Shotaro faces off against [[BigBad the Utopia Dopant]] '''without''' transforming into Double]], and at the end of the final episode when [[spoiler:Shotaro and Phillip become Double for the first time in a year and defeat the Energy Dopant]]. It also gets played in TheMovie during the final battle with Kamen Rider Eternal, [[spoiler:specifically when Double gets his EleventhHourSuperpower and Rider Kicks Eternal into the stratosphere.]]
* ''Series/DoctorWho'' never uses the main title theme itself in the scores to the episodes. However, in the new era:
** The Doctor had "[[http://youtu.be/YBqrv8Ugyxs The Doctor's Theme]]" in Seasons 1 and 2 supplemented by "[[http://youtu.be/oUizt6kMgbQ All the Strange, Strange Creatures]]" in Season 3 as his theme, with the latter playing whenever it was time for action. The Doctor's Theme comes back all powered up for season 4, with an instrumental in "Forest of the Dead" and orchestration in "The Stolen Earth. Then, in the finale of the Tenth Doctor (and of Russell T Davies as showrunner), [[http://youtu.be/SH7le7Dteok the two themes were combined]] to score the Doctor flying to the mansion and dropping down onto the Master. And ''finally'', to overscore the Doctor's regeneration, they power it up one last time. The Eleventh Doctor has [[http://youtu.be/5D-QPDGhCtM a new theme]], which gets louder and stronger for special occasions.
** The Daleks' [[OminousLatinChanting Hebrew]] [[http://youtu.be/xZ7vO7QGSxg choral theme]] becomes twice as powerful in "The Dark and Endless Dalek Night," and an echo of it is heard in the introduction of the New Dalek Paradigm.
** Rose's theme is powered up when she is superpowered by the Tardis.
** Martha's theme becomes "Martha Triumphant."
** Donna's bouncy theme becomes more complex when she reunites with the Doctor.
** Meanwhile in the classic era: A key element of the title theme ''was'' used as the climax to Tom Baker regenerating into Peter Davison, making the Doctor's death and renewal both poignant and triumphant. When the scene was repeated as the teaser to Davison's first story, the title theme element in the music cue fed straight into the opening titles themselves.
* ''Series/{{Airwolf}}'', a lot, including literal cases, where the theme tune plays as Airwolf starts up, and goes full-blast during the climactic fight scenes. In fact, you can usually predict down to the second when the final explosion will take place as it will be in time with the climax of the theme.
* On ''Series/{{Heroes}}'' a ticking clock sound starts playing whenever Sylar gets up to his serial killer shenanigans. It fits his backstory as a watch repairman, and is damn creepy to boot.
** In the Season 3 episode "I am Become Death", this trope is played around with when Sylar's theme is played again for another character, [[spoiler:Peter, as he loses control while trying to use Sylar's power.]] It's creepy and effective.
* ''Series/{{Batman}}'' usually fought goons to the sound of his theme music. And it was ''AWESOME''.
** Doubly awesome as every BIFF and POW is accented by a musical sting.
* ''{{Spaced}}'' spoofs by powering with another show's theme: Mike gets brooding MadArtist Brian to go from mouse to man by playing the ''Series/{{Thunderbirds}}'' theme.
** Another episode uses a drum and bass remix of the [[StarWars Imperial March]] over a MissionBriefing scene as Tim tries to power up the rest of the gang.
** "Where's Mike?" "He's over there!" Dancing to a [[CrowningMusicOfAwesome dance remix of the A-Team theme]] (youtube link was ScrewedByTheLawyers).
* ''Series/BuffyTheVampireSlayer'' did this in its first-season finale "Prophecy Girl," playing the show's theme (performed by Nerf Herder) during the climactic fight - the only use of that arrangement of the theme music within an episode.
* In an example of the character playing their ''own'' theme song, basically any time Omar Little of ''TheWire'' whistles "The Farmer in the Dell," odds are he's about to add yet another act of pure badassery to his resume.
* Everytime Grover transforms into Super Grover in ''Series/SesameStreet'' (He gets a version with Rock Guitar in ''Elmo Loves You'')
* Happens in the very first episode of ''Series/StarTrekTheNextGeneration'', when the crew successfully pull off the [[http://youtu.be/7u0nM_nLhB0 first saucer separation]] while at Warp 9.5.
* Oddly enough, even a network can be powered up through theme music. Remember [[http://youtu.be/i1NKoMNy5bY "HBO in Space"]], the [[StationIdent ident]] to new movies {{HBO}} used in the 80s and 90s?
-->"This intro makes me feel like I am about to witness the most important event in the universe." -sterpinator, Website/YouTube commenter
* This happens twice in a single episode of the reimagined ''Series/{{Battlestar Galactica|Reimagined}}''. In "Exodus Part 2", [[spoiler:during the escape from New Caprica some fairly standard, percussion-heavy music is playing, until the Galactica shows up ''falling from the upper atmosphere, launches vipers, and jumps away at the last second'', all of which is set to the most triumphant bagpipes you can imagine. Later, as Galactica is getting pounded by four Cylon basestars and everyone has given up hope, the music is slow and somber. The camera pans out until a missile appears from off screen, and then another one, until the camera turns around to reveal the Pegasus [[BigDamnHeroes in the nick of time]] and the music the music goes back to the exciting drum music.]]
* The pilot episode of ''{{Firefly}}'' features dueling theme music during the aerial chase between ''Serenity'' and the Reaver ship, with the Reaver's theme growing louder and more ominous the closer they get - only to be blown away by ''Serenity'''s theme when the ship pulls its Crazy Ivan maneuver and leaves them in the dust.
* The season 2 finale of ''Series/TeenWolf'' uses the season's opening credits theme in the climactic fight against [[spoiler: Grandpa Argent]].
* Smallville brings the series to life for a last time, delivering [[spoiler: Superman's original theme from the movies when Clark is throwing away his glasses and opening his shirt to reveal the "S" symbol on the last scene of the series. The last redeeming moment in 10 years.]]
* ''TheIncredibleHulk'': Tense music when Dr. Banner is HulkingOut, and then when Hulk kicks ass.
* Almost always the case in ''Series/{{JAG}}'' whenever Harmon Rabb does something heroic or gets someone acquitted from court martial charges.
* Many game shows since the 1970s would cue up their theme after a contestant wins big in a bonus round/end game.
* You know when ''Series/MacGyver'' has come up with an innovative solution to the problem of the week when the music starts playing.
[[/folder]]

[[folder:Newspaper Comics]]
* ''{{Popeye}}'''s use of this trope was parodied in ''PearlsBeforeSwine'' where the croc forgets to chew the spinach before swallowing, and chokes to death. ("[[FunetikAksent Tooday's]] lesson: [[SpoofAesop Always chew you food]].")
[[/folder]]

[[folder:Roleplay]]
* ''Roleplay/DestroyTheGodmodder'': Lampshaded by multiple players.
[[/folder]]

[[folder:Video Games]]
* ''SpaceAce'', when Dexter turns into Space Ace. [[https://www.youtube.com/watch?v=SX43op0oOD8 And it is AWESOME.]]
* ''{{Vanguard}}'' used "Vultan's Theme" when powering up. No one legally threatened Centuri apparently, since they also [[https://www.youtube.com/watch?v=zhPaim4frj8 shamelessly used]] the main theme of ''Film/StarTrekTheMotionPicture'' (later of ''Series/StarTrekTheNextGeneration'') as the opening theme.
* Played with in ''VideoGame/LollipopChainsaw''. Juliet's ass-kicking theme in Star Soul Mode? The chorus of "Hey, Mickey" ("Oh, Mickey, you're so fine..."), originally by Toni Basil (the version in-game is the B*Witched cover). Oddly appropriate, given that it's sung from the point of view of a cheerleader.
* ''VideoGame/CallOfDuty: ModernWarfare'' has this in arcade mode when you reach a x8 score multiplier. While it is not the official theme of the game that plays and your abilities don't change, it does indicate that you have killed a huge amount of enemies in a short time, so it is more of an indication of how bad ass you are.
* In the Gamecube version of ''SoulCalibur 2'', Link's theme starts blaring as he begins his destined battle against Raphael. Hearing the tune really pumps you up to kick Raph's arse.
* The little-known unlicensed Mega Drive shooter "Divine Sealing" plays its title screen music during a boss encounter.
* [[VideoGame/DragonAgeOrigins The Battle]] [[http://youtu.be/GVrXW0WVXYw of Ostagar.]]
* All of the companion missions in ''VideoGame/MassEffect2'' use that companion's theme music, which steadily gets more [[CrowningMusicOfAwesome awesome]] over the course of the mission.
** [[http://youtu.be/-aZPq-vMTd8 This]] plays during the sequence on Rannoch where [[spoiler:Shepard [[DidYouJustPunchOutCthulhu blows up a Reaper]] with a target designator linked to [[MoreDakka the entire Migrant Fleet]]]].
*** Also, in ''Mass Effect 3'': [[http://youtu.be/q6qVvbZC2Gs This]] happens. Doubles as a TriumphantReprise of the ''VideoGame/MassEffect1'' theme.
* ''Franchise/{{Metroid}}'':
** ''VideoGame/SuperMetroid'''s FinalBattle, where the remixed Crateria theme starts thundering over Samus' HeroicSecondWind against Mother Brain.
*** The "Theme of Super Metroid" itself becomes a ThemeMusicPowerUp during ''Subspace Emissary''. It plays when Samus gets her Power Suit back on the FloatingContinent.
** Late in ''VideoGame/MetroidZeroMission'', Samus is stripped of her armor, and is forced to sneak past a pack of murderous space pirates who can kill her in one shot. She gets two consecutive Theme Music Power Up moments:
*** After gaining a new, more powerful version of her armor in the Chozo Ruins, Samus gets the "got item" theme, but instead of the remixed jingle from the original like the game has been using, [[http://youtu.be/jBOE2zMxFgw it's instead a remix of the one from Super Metroid and later]]. Sends chills up and down the spine.
*** Samus then retaliates against the pirates with a vengeance, now able to destroy ''them'' in one shot, with an [[http://youtu.be/wEPmfXUQGgw up tempo version]] of the Brinstar theme song blaring all the while.
** The final boss of ''VideoGame/MetroidPrime'' is accompanied by the already slightly creepy, OminousLatinChanting filled main menu music, warped to sound even stranger and more alien. Given that the main menu has the interior of a Metroid for its backdrop, this really drives home just how ''wrong'' the final boss is, even compared to life energy sucking floating fanged jellyfish.
*** Both Ridley and Dark Samus have Evil Theme Music Power Ups in ''Metroid Prime 3: Corruption''. In the case of Dark Samus, it's a [[BigDamnHeroes Big Damn Villain]] moment too.
* ''VideoGame/MetalGearSolid3SnakeEater'' invokes the song ''Snake Eater'' if the player is running out of time in the final battle [[spoiler: with The Boss]].
** ''VideoGame/MetalGearSolid4GunsOfThePatriots'' plays with this, where playing certain songs on the IPod provides ingame bonuses. Naturally the ridiculously awesome ''[=MGS3=]'' theme (''Someday, you walk through the raaaaaaain, some day you'll feed on a treeeee frog!'') makes you almost unstoppable.
*** Then there's the finale of ''[=MGS4=]'', where [[spoiler:a final fistfight with Liquid Ocelot comes in four parts, with music from each main game of the series (and matching health bars) for each section, until the music runs out of steam and it's just two old men throwing their last ounces of strength at each other.]]
** ''VideoGame/MetalGearRisingRevengeance'' does something similar with the Winds of Destruction and other bosses. Normally, the music is instrumental. But when Raiden begins to push them to their limits, [[LetsGetDangerous their attacks begin to change]] and the songs begin to add vocals.
* ''Mega Man'' series examples:
** Zero in the ''VideoGame/MegaManX'' games has a different theme song in every game, and it always plays when he does something awesome (blowing off Vile's mech's arm in the first game, sacrificing himself, destroying a copy of himself in just three shots, etc.).
** This holds true in the ''VideoGame/MegaManZero'' saga. Whenever that particular game's Zero theme song starts sounding, rest assured -- you're about to do something very cool.
*** Also, the music changes into the foreboding final stage theme after the first form of the final boss is defeated and [[spoiler:the Ragnarok satellite is plummeting toward the planet with Weil making a last bid by [[BodyHorror hooking up to the remains of its control system]] and directing it towards Area Zero.]] Then Zero has his WorldOfCardboardSpeech and the absolutely awesome final boss music starts up.
** And ''VideoGame/MegaManBattleNetwork'' games have a theme in each game, based around the same two tunes throughout the series, which is played for no other reason other than to show off how something heroic is going on.
*** The tracks are actually called "Heroism".
*** Not to mention "You're Not Alone" for the BigDamnHeroes moments.
*** In what can only be described as MoodWhiplash, the 6th game has a slow, sad version of the theme, as [[spoiler:Iris and Colonel reveal that they are going to fuse, deleting them]] to get rid of the Cybeast inside the eponymous character, then "You're Not Alone" plays as the event actually ''happens''.
*** The ''Anime/MegaManNTWarrior'' anime even did this in the Japanese version -- if you heard the theme song, it was time for the heroes to start winning. Without fail. The dub did not retain this tradition.
*** The final match of the [[TournamentArc N-1 Grand Prix]] was, of course, between Netto and Rockman and [[TheRival Enzan and Blues]]. The fight takes place while the AnimeThemeSong, "Kaze wo Tsukinukete", blares in the background, and both Navis pull off the Program Advance Beta Sword and commence a swordfight so epic the holographic display almost can't contain it. And then Blues ''wins'' by way of SingleStrokeBattle. Rock falls over, and Blues and Netto both congratulate Rock on his hard fight while a slow, sad ballad version of the very same opening theme plays.
** In ''VideoGame/MegaManZX'', you get a brief moment of your protagonist's bright idealism, accompanied by Green Grass Gradation (the very upbeat and optimistic Area A music from the very beginning of the game), before commencing the final battle.
** What, nobody thought that ''VideoGame/MegaManLegends'' was worth mentioning? Juno has J.S. Bach's ''Fugue in G Minor''; unattractive name, epic pipe organ. [[http://youtu.be/feimQjaydPw You can listen to it here,]] or if you want to see how well the music suits Juno, [[http://youtu.be/yghJPeJmJgQ&feature=related watch the battle here.]] The music gets even more epic when you enter into the second part of the battle; [[http://youtu.be/rB3cgHSkuCQ&feature=related click here to see what I mean.]]
** In the promo video showing Mega Man joining ''VideoGame/SuperSmashBros'', he starts fighting backed up by the ''VideoGame/MegaMan2'' theme, which [[TheDayTheMusicLied ends when he other Smashers fight back]]. Down but not out, Mega Man taps into his old Robot Master weapons and tears up the others to [[http://www.youtube.com/watch?v=aX2KNyaoNV4&feature=youtu.be&t=54s Mega Man 2 - Wily Theme 1]].
** ''MegaManStarForce 3'' plays Sonia's song from earlier in the game right before the final boss, which is itself a take on the series theme.
* During the second fight with Dracula in ''VideoGame/SuperCastlevaniaIV'', the music changes from the level music to Simon Belmont's theme. Note that this has worked in reverse as well; Dracula's theme music, Dance of Illusions, usually plays in the fights where he's the most difficult to defeat (like in ''Dracula XX'', where the battle takes place over a series of bottomless pits).
** Two examples of this one in ''VideoGame/CastlevaniaAriaOfSorrow''. In the first example, when you enter the boss room for The Arena, the normal boss music plays, as a cloud of bats flies outward and reforms into one Giant Bat. ''Then,'' a giant hand stretches out from the background (a huge shattered cage) and crushes the bat in its grip, just as the music changes to an entirely new boss theme. You end up fighting Balore (a giant ogre), one of the tougher bosses in the game.\\
The second example is in the extended ending. If you fight the normal final boss, Graham, a certain way, you will [[spoiler: inherit Dracula's powers once you defeat him.]] This allows you access to a previously sealed area of the castle... [[spoiler:where you get to fight Julius Belmont himself!]] The battle is a tough one, too -- especially because [[spoiler: Julius]] has the best theme music in the game.
* This is essentially the effect of Star Power in the ''GuitarHero'' games. Once activated, every note you successfully hit earns you double points, and the crowd rhythmically claps in unison. This is a great way to save you from certain death on difficult songs like "Bark at the Moon" and the faster second half of "Hangar 18".
* The final mission of ''DawnOfWar2'' switches on [[https://www.youtube.com/watch?v=4xvEOTQu600 this]] when TheCavalry shows up and you get to go on the offensive.
* Used throughout the ''Franchise/{{Halo}}'' series. The Halo Theme generally starts playing whenever things get particularly exciting -- a narrow, timed escape, a huge, 3-way battle, etc. And, of course, whenever Master Chief does something utterly awesome, the theme WILL be playing.
** Depending on how awesome whatever Master Chief is doing is, you might get the "Brothers in Arms" mix, the "Rock Anthem / Mjolnir Mix," or the "Covenant Dance" mix.
** The best example being the final mission of ''Halo 3'', which consists of one of the most epic escape sequences in video game history.
** The Arbiter actually gets a mix of his own as well: "Unyielding," introduced in Halo 2, which plays when riding into battle against the Brutes in the last few levels. This track is later spliced into the ''Halo 3'' version ("One Final Effort") that plays during the big escape at the end.
** How has the "Breaking Benjamin Room" of Halo 2's Gravemind mission not been mentioned? Towards the end of the level, the player must go through a room full of combatants from both the Elite and Brute factions in a firefight. Breaking Benjamin's "Blow Me Away" plays through here, and the rock quite fits the awesome battle the player is about to participate in.
** In Halo3ODST, expect varients of the Menagerie or Orbital Drop Shock Trooper to kick in whenever something awesome happens. And of course, HaloReach continues the tradition with variants of Unreconcialed, Lone Wolf, or Noble Mission kicking in whenever Noble Team readies up for asskicking.
* Each area in ''PhantasyStarOnline'' has two songs (or parts if you see the song listing in the Sound Test or the OST). Part one is soft and calm while part two, which starts up when enemies attack, is more intense and has a harder beat to it. Both parts last almost the same length and have the same BPM, which lets the BG music flow from one song to another as if it were just the same song just getting more intenser. The intensity between the parts goes up with each episode as well.
* ''SonicTheHedgehog'' has been doing this lately. When someone goes Super at the end of each game, it is ''always'' accompanied with a ThemeMusicPowerUp.
** ''Sonic the Hedgehog 2'' did it best with the Super Sonic theme--music that tells you immediately that all bets are off.
*** With the ''Adventure'' series giving each playable character theme song, said theme tunes were often used as leitmotifs, which ended up having this effect at times. Take, for example, ''VideoGame/SonicAdventure2''. Dr Eggman's Egg Golem. In the Dark Story, Eggman moves to strike Sonic, to his own theme music. Then Sonic's theme tune suddenly takes over. Sonic dodges the attack, jumps on the Golem's head, and--[[CrowningMomentofFunny with a TERIAAAAA!]]--delivers a single flying kick to the mind-control device on the Golem's back, which destroys it and sends it attacking Eggman instead.
** ''VideoGame/SonicGenerations'' used several times in Sonic Generations. In the Shadow rival battle, the stage's music gets replaced by "Live and Learn" or "All Hail Shadow", when Sonic or Shadow (respectively) gain full power of the power-up they're chasing.
*** Another time is during the [[spoiler:Time Eater]] boss fight, using the Super Sonic theme from ''VideoGame/SonicTheHedgehog4'' mixed into the soundtrack. Does it first in the cutscene at the start when both Sonics turn super, and again for the last hit on the boss.
** In the DS version of ''VideoGame/SonicColors'', 'Reach for the Stars' kicks in (for about ten seconds before you beat the boss, unfortunately) when you activate the 'Final Color Breaker'.
* Inverted in ''VideoGame/FinalFantasyVII'': A FlashBack to the BigBad's deteriorating mental state is accompanied by a few, looping malevolent chords. When he snaps, they extend and turn out to be the opening of his {{leitmotif}}.
** Not to mention the full-on OminousLatinChanting excellence of the final boss fight.
** "One Winged Angel" is used several times through the VII Compilation as a Theme Music Power Up, most notably the above-listed transformation into Safer Sephiroth, as well as the fact that the song pretty much ''brought Sephiroth back from the dead.''
** In CrisisCore, there's a cutscene showing Sephiroth, Genesis and Angeal having some fun on top of a virtual version of the Junon Cannon. When Genesis gets a little too serious about the fight, a version of "One Winged Angel" kicks in to show that Sephiroth is [[OhCrap no longer playing around]].
* Locke's Theme is the standard ThemeMusicPowerUp in ''VideoGame/FinalFantasyVI''.
* When the main plot of ''VideoGame/ChronoTrigger'' starts up, they even let you bask in the theme music during enemy encounters.
** Also, characters' personal themes. [[http://youtu.be/wTBb1OBYA_I Frog]] is particularly notable for this.
** Magus has a theme song that's awesome enough when your party is fighting him. However, if you happen to have him in your party when fighting the BonusBoss, [[spoiler:his mother]], he personally taunts his enemy and replaces the normal boss song with his own.
** When Dalton commandeers the [[spoiler:Epoch]], he complains about the heroic music (which is in fact the main protagonist's theme) that starts as it engages ("No, no, no, no...! [[LeftTheBackgroundMusicOn Stop the music]]!") and replaces it with a more villainous tune. ("Ha! There we go!")
* Gig, OmnicidalManiac hero of ''SoulNomadAndTheWorldEaters'', has ''three'' theme songs. Consequently, he has three different stages of ThemeMusicPowerUp depending on which one's used, ranging from "you'll receive a [[DeadpanSnarker verbal smackdown]]" to "you're DeaderThanDead, and so's your ThrowAwayCountry AndYourLittleDogToo".
* In the ''[[VideoGame/NintendoWars Advance Wars 2/DS/Days of Ruin]]'', when a CO Power is used, the normal CO theme will be replaced by a heavy metal tune depending on the CO's faction.
** Also happens when Will/Ed appears in the middle of Hope Rising to save everyone from [[spoiler:Greyfield/Sigismundo]]. Before he arrives, you have no CO, so you have the frantic, desperate no CO music; once he shows up, his rocking theme takes over, and you know it's time to kick some ass.
** ''VideoGame/TheLegendOfZeldaTheWindWaker'' is like this too.
** In the beginning of TheLegendOfZeldaLinksAwakening, you're harmless and must make your way to the beach by pushing enemies around with your shield. Find your sword, though, and after a brief cue the music switches to the Legend of Zelda main theme.
* ''VideoGame/StarFox'' has Star Wolf's theme which remain pretty much the same (just with different instruments) throughout the series. You can't have a Star Wolf theme without Star Wolf team after all!
** Including a Mariachi Band in ''VideoGame/StarFoxAssault'' and ''VideoGame/SuperSmashBros. Brawl''.
* ''VideoGame/SuperRobotWars'' uses this by ''default''. The music that plays during any unit's Attack animation is often it's series theme song. Same for the non-BadassNormal characters in the OriginalGeneration games, until the remake gave everybody their own. In all SRW games, they will also play the trope completely straight at appropriate moments in the plot, and will play an entire game's theme song when some ''serious'' beatdown is about to commence. Through the Alpha and OG series', Elzam Branstein's "Trombe!" is so BadAss, overrides almost all other theme music (even bosses), and results in much ass-kicking. Particularly from Alpha 3 onwards, there is the option to change the unit's battle music, with exceptions (such as "Goldion Hammer" and "Goldion Crusher", which only play during their attacks--their BadAss attacks). In addition, the Sound Force from Macross 7 literally defeat enemies by singing at them--and can also power up your other units with their music.
** Though, of course, that was rather the ''point'' of Sound Force. Up to and including powering the WaveMotionGun of the show by the end.
** The spin-off game ''EndlessFrontier'' also uses this liberally: while the normal battle themes are randomly selected from 4 different possibilities depending on who's in the party, the character-specific theme starts playing whenever someone uses one of their special attacks.
** SRW manages to take this to a true extreme in ''Alpha 3'' when a song composed as a collaboration between [[SuperDimensionFortressMacross Minmay]] and Basara (in the story, at least) actually saves the day in [[spoiler: the final stage, by galvanizing the heroes against a wave of malice that comes from the series' ultimate BigBad.]] It's no coincidence that the song was created in RealLife by JAMProject for that game.
** Sorry, I can't hear you over the sound of how '''''TROMBE!''''' I am.
** Interesting to note, "Trombe!" was ''not'' the first instance of theme song override in the series. In Alpha Gaiden at least, certain units had "super attacks" that would trigger a different song. [[Anime/AfterWarGundamX "Satellite Cannon"]], [[Anime/MobileSuitZetaGundam "Riders In the Skies"]] and [[Anime/TurnAGundam "Dark History"]] were not programmed to have a lower priority than boss songs.
** [[MartianSuccessorNadesico Ruri]] [[InvokedTrope invokes]] this by playing the ''Gekiganger3'' theme during [[http://youtu.be/e02RkB6FxXc a key battle]] in ''VideoGame/SuperRobotWarsW'', giving everyone the extra dose of HotBlooded they need to save the day. [[LightNovel/FullMetalPanic Sousuke]] and [[Anime/MobileSuitGundamWing Heero]] try to resist this, as they must be stoic.
** Sheryl, in [[http://youtu.be/y47snC3G6Iw Scenario 18-A]] of ''VideoGame/{{Super Robot Wars Z}}2: Hakai Hen'', sings "Iteza Go Go Kuji Don't Be Late" to pump up the heroes so much that they all instantly shoot to 130 Will and beat the Beastmen mooks. Baron Ashura arrives with some Kikaijuu, so Ranka takes the stage and sings her song "What 'Bout My Star?". Simon and Kamina get pumped up even further, to the point that Kamina debuts Gurren Lagann's famous Giga Drill Break(er), nearly obliterating the Kikaijuu Taros D-7 with it
*** And, in the spirit of SRW, ''BattleMoonWars'' does the same thing. Villains will always override songs with their own themes when they are engaged, and several characters have their multiple themes. For example, Shirou's default music is the one used for VisualNovel/FateStayNight characters, but when using Nine Lives Blade Works, it changes into a remix of Emiya.
* Speaking of song overridings, ''DynastyWarriors'' have Lu Bu, which Elzam seems to be an {{Expy}} of. And finally, in SamuraiWarriors, there's Honda Tadakatsu for the man of theme song overriding. Note that the music only overrides the 'default' music (it varies based on the situation) when a player is within proximity of either, and of course that this only applies when they're opposing [=NPCs=].
** In Samurai Warriors 2 Empires, the default theme for the stage is changed to Tadakatsu's theme while you play as him. You can still change it to something else if you wish.
* In the [[CrowningMomentOfAwesome best scene]] in ''VideoGame/SuperSmashBros. Brawl'''s Subspace Emissary, after [[spoiler:Ganondorf and Bowser's gigantic Subspace Battleship shoots down the heroes' recovered Halberd, the heroes escape in their personal fighters to the ThemeMusicPowerUp.]] The music being [[OminousLatinChanting Dramatic Latin Chanting]] doesn't hurt.
* {{Boss battle}}s in ''VideoGame/SkiesOfArcadia'' are accompanied by music that changes according to how well the player is doing. If the player's party has taken a lot of damage, the music is ominous and fractured; if the player is only a few turns from victory, it's upbeat and triumphant.
* The final boss battle in ''VideoGame/{{Persona 3}}'' is accompanied by a remix of ''Burn My Dread'', the game's theme tune. It's appropriate for this trope because [[spoiler:as the battle progresses, the Main Character [[CombinedEnergyAttack powers up his final ability]]]].
** Pretty much all the music in ''Persona 3'' was awesome, but ''every'' version of ''Burn My Dread'' has the ability to either [[CrowningMusicOfAwesome rock you in the face]] or [[PlayerPunch punch you in the soul]]. The version in the final battle is incredibly tense, but also uplifting, with the slow rise of the chorus in the background and the solid, rhythmic hip-hop lead vocals creating this eternal escalator of pumped-upness. [[spoiler:And once you've played that scene, you'll never be able to hear it without [[CrowningMomentOfHeartwarming hearing Shinji helping you out]].]]
** The boss battle against TheDragon, and true ([[ScriptedBattle non-scripted]]) [[spoiler:FinalBattle]], is fought at the sound of "Battle Hymn of the Soul" --a [[CrowningMusicOfAwesome glorious power-rock remix]] of the LeitMotif for the ''entire'' ''VideoGame/{{Persona}}'' series, "Aria of the Soul".
*** Alternatively, when you're visiting P3's town on the sequel, the ambient music is from the third game. Crowning Moment of Heartwarming for those who loved the last edition, and a brutal change from the original pace of the game, which is heavily pop influenced.
* In ''[[PhantasyStar Phantasy Star III]]'', the world map theme adds instruments and background to the main melody as more characters join your party. However, if the main character of the generation falls in combat, a much more tense and negative tune plays until said character is resurrected.
* This occurs at least once in each chapter of ''LiveALive'', usually using that particular chapter's battle music. A notable example is during the Mecha chapter's giant robot Buriki Daioh (whose theme music is acknowledged by an NPC saying "Start the music!" whenever the player tries to activate it). Also notable is that the game's main theme is used as the battle music for the final chapter, making nearly every battle a Theme Music Power Up.
** Also inverted in one chapter. [[spoiler:Whenever you play as [[TheWoobie Oersted and somehing awful happens to him]], he has a flashback of sorts and a loud droning noise is heard. By the end of the chapter where [[FallenHero he reanounces humanity and becomes the demon king Odio]], the droning returns, but eventually becomes a song. The song name? "The Demon King Odio," which has been used frequently in the game up to this point as the boss themes..]]
* ''VideoGame/SaGaFrontier'' had Alkaiser's theme, which plays [[spoiler: Once Red receives his upgrade to superhero status, when you fight Shuzer the 2nd time and when you fight Arachne (Cindy Campbell)]]
* Musical motifs from Exdeath's already evil and imposing theme in ''VideoGame/FinalFantasyV'' are used in his even more awesome personal battle theme.
** During an optional boss fight near the end of the game, a certain song starts playing when it becomes apparent that the party can't win. The song is [[spoiler:Gilgamesh's theme song, "Battle at the Big Bridge"]], and sure enough he shows up to save the day.
* In ''Age of Mythology'', when the player's units attack an opponent's major buildings (Town Center, Palace, etc.) the music switches to a more stirring track.
* In ''VideoGame/ThunderForce V'', as you fly into space you encounter a replica of the ship you flew in ''ThunderForce IV'' as a boss, accompanied by an (even more) awesome remix of the [[PowerOfRock heavy metal theme tune]] of ''VideoGame/ThunderForce IV'' (although this could be considered an inversion, considering its a ThemeMusicPowerUp for your foe).
** This happens yet again during the boss battle with Orn's very own version of Vasteel in ''VideoGame/ThunderForce VI'', but not only do you fight Rynex, but you also fight Styx and Gauntlet as well!
* ''VideoGame/CaptainAmericaAndTheAvengers'' would play a [[http://youtu.be/hcMwEyafxCs cool Super-Hero type music]] when the level's boss was down below 30% health.
* Played for laughs in ''VideoGame/MonkeyIsland2LeChucksRevenge'', when Guybrush swinging heroically to grab a chest prompts the IndianaJones theme tune. Then it's quickly subverted as Guybrush is left hanging from the rope and the music meekly fades out.
* In the arcade game ''[[VisualNovel/FateStayNight Fate/unlimited codes]]'', when Archer gets to the "Yet, these hands will never hold anything" part of his chant, the regular background music cuts off and [[spoiler:"Emiya"]] kicks in. Unlimited Blade Works ownage follows.
** This happens in the original Visual Novel as well. As soon as [[http://youtu.be/4uvhmN5EJNI Emiya]] starts playing, ass will be thoroughly kicked. By Shirou, a good 90% of the time. If Asskicking was a country, "Emiya" would be the national anthem, and Shirou would be the Grand Emperor.
* ''[[FateExtra Fate/Extra]]'' does this for all three playable servants, whenever a character uses their [[SuperMode Noble Phantasm]] the scenery changes and their personal {{leitmotif}} plays for the duration.
** Red!Saber's theme ''[[http://youtu.be/wS6uCIqrs0g Saber, Everything is in Your Hands]]'' plays when she uses her Noble Phantasm '''[[http://typemoon.wikia.com/wiki/Aestus_Domus_Aurea Aestus Domus Aurea]]'''.
** Archer's theme is a remixed version of EMIYA here called ''[[http://youtu.be/tIkp-roj3Mc&feature=relmfu Archer, The Hero Who Nobody Knows]]'' that plays when he uses '''[[http://typemoon.wikia.com/wiki/Unlimited_Blade_Works Unlimited Blade Works]]'''.
** [[LittleBitBeastly Fox]]!Caster's theme is a remix of the menu theme from the original Fate Visual Novel here called ''[[http://youtu.be/4uf3O_99AQc&feature=relmfu Caster, An Extra Life With Anyone She Wants]]'' and plays when she uses '''[[http://typemoon.wikia.com/wiki/Suiten_Nikkou_Amaterasu_Yanoshisu_Ishi Suiten Nikkou Amaterasu Yanoshisu Ishi]]'''
* It's difficult to say whether Kratos' theme music in ''VideoGame/GodOfWar'' is this or a particularly bloody version of MickeyMousing. Either way, it's awesome on spoons.
** "Rage Of Sparta" from God Of War III definitely qualifies as this, as when it kicks in, Kratos is about to fuck somebody up.
* In ''SpaceInvaders Extreme'', picking up a powerup [[VariableMix remixes the music into something louder and more intense]] for the duration of your powerup, and the music becomes even more epic if you go into [[LimitBreak Fever Time]].
* The final boss battle of ''VideoGame/LaMulana'' begins with a fairly standard boss theme for the game: all the bosses have their own themes that nonetheless open with the same chord sequence. Then, for the second form onward, "Good Night Mom" kicks in: a remix of the protagonist's own theme (the Surface theme, "Mr. Explorer") that opens instead on the fanfare that last played the very first time Lemeza entered the ruins.
* In ''VideoGame/CaveStory'' the battle with [[spoiler:[[PerfectRunFinalBoss Ballos]]]] has three different songs. His first form is accompanied by "Gravity," the normal boss music. Then when you reach his second form, the music switches over to "Eyes of Flame," which is usually reserved for more dangerous bosses. Finally, his third and fourth forms come with a side of "Last Battle," the background music to the battle with the Undead Core.
* In ''VideoGame/FinalFantasyIV'', when BigBad Zeromus has all but obliterated the party, the Elder of Mysidia clears his throat, asks all the former party members for help, and [[CrowningMomentOfAwesome "Final Fantasy", the theme song for the entire series (also known as "Prologue") plays]]. Cue the CombinedEnergyAttack that revives the party to full fighting strength.
* The FinalBattle of ''{{Okami}}''. The protagonist: Amaterasu, ''Sun Goddess''. The enemy: [[spoiler: Yami]], Lord of Eternal Darkness. The name of the song: "The Sun Rises." Yeah, the FinalBoss doesn't stand a chance.
* In the game ''GodHand'', the song that plays in the first level, the western-style one is an awesome surf song called "Gene's Rock-A-Bye". Whenever Gene unleashes his God Hand, a much faster version of "Gene's Rock-A-Bye", called "Broncobuster" plays, even drowning out the themes of bosses he's fighting. Even Azel, who has the Devil Hand and his own Theme Music Power Up (from "Devil May Sly" to "Duel Storm") can't win against "Broncobuster".
* Grand Papillon (AKA Joachim Valentine) from ''ShadowHearts: Covenant'' plays this semi-straight several times throughout the game, and parodies it in one scene. [[spoiler: During his first fight with Veronica, though not actually the first time you meet her in the game, Joachim is beaten around rather badly until Yuma throws his trademark mask to him. he crawls toward the mask and puts it on. Cue dramatic theme music and a lensflare, after which he proceeds to win the battle without breaking a sweat.]] The parody comes from the fact that the mask in no way helps him -- it's all in his head.
* The ''VideoGame/SpaceChannel5'' games also feature this trope. In the first one at the end, when Ulala is fighting [[spoiler:Blank]], the music starts with a small, acapella version of the game's theme song "Mexican Flyer". The better Ulala does in the battle, the more voices join in with the singing. As she gets closer to winning, even real instruments start to play, finally culminating in a thick and triumphant rendition of "Mexican Flyer" as Ulala defeats the BigBad.
** Similarly, the final battle of the second game, ''Space Channel 5, Part 2'' features Ulala fighting against the new BigBad named Purge. The song that plays there is called "Connected Hearts" and is also a triumphant rendition of "Mexican Flyer", complete with the characters singing ''lyrics'' to it!
* Play with the Spartans in ''SidMeiersAlphaCentauri'', and every time your troops are fighting you'll hear an absolutely badass heavy metal theme.
* ''RiseOfNations'' replaces the usual ethnic rhythms with military fanfares every time your troops are kicking some enemy ass.
* As well as ''VideoGame/CommandAndConquerGenerals''.
** While you can choose the music playing in the earlier ''VideoGame/CommandAndConquer'', in ''[[VideoGame/CommandAndConquerTiberianSun Tiberian Sun]]: Firestorm'', when Cabal activated his last line of defense, a huge and powerful HumongousMecha, the song "Slave To The System" immediately plays unless you switch off the music. This applies for both GDI and NOD versions of the mission.
** Also in ''VideoGame/CommandAndConquerRedAlert3'', the background music immediately changes when the player's unit is engaging the enemy in battle (and likewise changed again when the battle ends, to different songs depending on whether you won or lost).
* ''[[DefJamSeries Def Jam: Icon]]'' is the literal embodiment of this trope. When two players fight, they each choose a song. Whomever is winning the fight will have "their" background music playing (and the background shimmies and dances to its beat). Certain areas of the level explode during bass hits, and the fighters actually control the music by making DJ scratching motions in the air to wound their opponent. [[http://youtu.be/0iapGFosF_0 See how it works here]], though the lyrics are {{NSFW}}.
* ''WanganMidnightMaximumTune'' marks the introduction of a major character into an arc-ending race with his or her {{Leitmotif}}.
* Keeping up with the ''FinalFantasy'' references, the last true boss of ''VideoGame/FinalFantasyX'' is heralded by a massively muscled arm clawing up to a platform -- and much more importantly, metal guitar.
** The "Challenge" soundtrack really comes into its own as a TMPU in the way it builds up in the cutscene in The Beyond and its peak when the fight against [[spoiler:Yunalesca]] finally begins.
* In ''ShadowOfTheColossus'', the music is usually a mournful, slow-moving tune when you start fighting a colossus, but when you grab onto the thing and prepare to stab, the music swells into a louder, (usually) faster, and more awesome song that certainly fits the theme of you stabbing a thing well over 10 times your size to death. [[spoiler:And when you realize you're pulling a NiceJobBreakingItHero, the music turns bitterly ironic.]]
** Link gets one of these in ''VideoGame/TheLegendOfZeldaTwilightPrincess'' whenever he gets in the position to actually hurt the boss.
* In ''EliteBeatAgents'', the agents fight off against music-hating aliens by getting everybody in the world to dance to an ''[[CrowningMusicOfAwesome absolutely epic]]'' cover of The Rolling Stones' ''Jumping Jack Flash''. In fact, the entire game (as well as the Ouendan series it's based on) revolves around this.
* In ''AceCombat Zero'', whenever something particularly awesome happens the latin guitar from the final boss fight kicks in for a short duration. And of course there is [[CrowningMusicOfAwesome that]] final boss music.
** For those of you who haven't played the game: it's a mix of flamenco music, OneWomanWail, OminousLatinChanting, and pure awesome.
** AceCombat 5 has "The Unsung War", which combines your theme song with OminousLatinChanting for 7 minutes of awesome. Did I mention the fact that you're shooting down a SATELLITE while being attacked by the best aces of the last war?
** The entire series has a tradition of playing the game's main theme during the climactic battle.
* In the original ''VideoGame/{{Persona}}'', during battles where a new party member is introduced, the game uses a special battle theme called "Awakening". In these battles, the character(s) in question go from being regular high school students to [[MagicKnight full blown Magic Knights]].
* The original ''VideoGame/StarSoldier'' ShootEmUp for the NES changes the music when you power up...and in a later remake for the PS2, GCN, and PSP a rock remix of the power up theme plays. AWESOME.
* ''VideoGame/{{Persona 4}}'' has music for the FinalBoss that [[VariableMix starts out slow and ominous, then gradually picks up as you wear down the boss]]. The last stage of the music is an instrumental arrangement of the main battle theme, ''Reach Out to the Truth''.
* In ''[[VideoGame/GuiltyGear Guilty Gear 2: Overture]]'' whenever one player gains a clear upper hand their character's theme music plays.
** Also, special music plays when certain characters face off in a Master vs. Master battle.
* The ''{{Wild ARMs}}'' series, with the exception of the first and third games, have a tendency to have the game's theme song serve as the final boss's BGM. Possibly among the most awesome usages of this trope; ''VideoGame/{{Wild ARMs 2}}'' and ''VideoGame/{{Wild ARMs 4}}'' in particular use ThePowerOfFriendship and a CombinedEnergyAttack completely shamelessly in the course of the fight, which when combined with the [[AwesomeMusic/VideoGames incredible songs]] makes for [[CrowningMomentOfAwesome moments of total awesome.]]
** ''VideoGame/WildArms2'' also has [[SpellMyNameWithAnS Nightblaze/Knight Blazer]], the protagonist's SuperMode. When triggered, it overrides the current music with an ass-kicking beat, no matter how dramatic a boss you're supposed to be fighting. The exception is the final boss which, as mentioned above, has its own SuperMode with its own CrowningMusicOfAwesome.
* ''VideoGame/TheWorldEndsWithYou'': You're about to face down the final boss alone, leaving you practically powerless. Suddenly, your friends [[MyNameIsInigoMontoya decide to stop being unconscious and help out]]. Cue the SurrealThemeTune.
* In the console version of ''VideoGame/BlazBlue'', if a player performs Bang Shishigami's Furinkazan super move, the music suddenly changes to a brand-new song by [[JAMProject Hironobu Kageyama]] called "Omae no Tetsui ni Kugi wo Ute". It's an over-the-top song about how much of a HotBlooded {{Badass}} Bang is. And it is ''[[CrowningMusicOfAwesome awesome.]]''
** '''''BANG BANG BANG [[http://youtu.be/FYKPmkOF-z8 BAAAAANG!!!]]'''''
** Also, the final battle in story mode, rather than simply playing the same final boss theme as arcade mode, instead has the game's opening theme as its BGM.
*** A similar thing happens in [[VideoGame/BlazBlueContinuumShift Continnum Shift's]] True Ending as well, except it happens twice. First it plays [[VideoGame/BlazBlueCalamityTrigger Calamity Trigger's]] opening theme when the main character gets his EleventhHourSuperpower. Then it plays [[VideoGame/BlazBlueContinuumShift Continnum Shift's]] opening theme against the TrueFinalBoss.
** And in the console version of the sequel, ''Continuum Shift,'' when you perform an [[FinishingMove Astral Heat]]), the chorus of the opening song plays in the background.
* ''VideoGame/{{Disgaea|HourOfDarkness}}'' is fond of this. An interesting point is Kurtis' awesome [[spoiler:return]], which makes the [[CrowningMusicOfAwesome music]] his theme by default.
** Also, the anime switches to an instrumental version of Lord Laharl's Hymn whenever the Prince gets angry. But that's nothing next to what [[spoiler:The earth SDF]] does when ''their'' theme music is first played.
* ''VideoGame/TalesOfTheAbyss'' has this used ''against'' the party in the optional Arena battle with four previous Tales characters; at first, the game is playing [[http://youtu.be/cxH5zaTQHzk "Everlasting Fight,"]] which is a medley of previous Tales battle themes. If you don't defeat them fast enough, Reid will activate Aurora Wall, revive any of his fallen party members, deal tons of damage to you, and a remix of [[http://youtu.be/W70Rr2wFWQ8 "Eternal Mind"]] suddenly starts up. This is about when any average player goes "OhCrap."
-->'''Reid:''' "''We will not'' '''''LOSE!!'''''"
* A traditional example shows up in the final battle of ''VideoGame/TalesOfXillia2'' when Ludger [[spoiler: unlocks the full potential of his Corpse Shell]] and an awesome remix of the game's theme song starts playing. It can easily be subverted, though, as the boss is just capable of wiping out the party as before.
* In ''BatenKaitos Origins'', the TrueFinalBoss knocks the PowerTrio on its ass a few minutes into the fight, but then [[spoiler:Malpercio gives Sagi a RousingSpeech]], '[[CrowningMusicOfAwesome Le Ali Del Principio]]' starts up, and the trio get back on their feet. And this time, you ''know'' it's going down.
** Earlier than that, the songs 'The Power of a Pure Heart and the Path to the Distant Future' and 'Bitter Enemies in the Same Boat' are both used at powering-up points (namely, [[spoiler:the end of the Heart-to-Heart and when Sagi first gets the power to destroy machina arma]], respectively).
* The final boss of ''Devil Summoner 2: RaidouKuzunohaVsKingAbaddon'', comes in three stages. The first stage has a unique battle theme, the second is recycled from earlier, but the third plays ''Raidou's'' theme, as a nice reminder of just how epic he is.
** The themes of the final boss isn't about how grand he is as much as it is about Raidou kicking his ass.
* Inverted [[OhCrap much to any Survivor's dismay]] by the Tank's theme in ''VideoGame/Left4Dead'' and ''VideoGame/Left4Dead2''.
** Can be taken one step further once you figure out how to change the music that plays when a tank arrives. Switch to something with OminousLatinChanting for extra effect.
*** [[http://youtu.be/e64i1tUj3iQ COME ON AND SLAM, AND WELCOME TO THE JAM!]]
* ''VideoGame/TalesOfSymphonia'': One of the playable characters, Kratos, has his own theme tune that plays slowly. However, during a certain event in the game, a faster, more upbeat and more complex version is played.
* The ''VideoGame/DoubleDragon'' title theme is played during the final battle in the first game instead of the usual boss theme. ''Return of Double Dragon'' (the Japanese version of ''Super Double Dragon'') is the only other game in the series to do this as well.
** Oddly, in the NES version, the music switches to the City Slum theme when you fight [[MirrorBoss Jimmy]].
** The battle with Willy in the arcade version of ''VideoGame/DoubleDragon 2'' uses a BossRemix of the title theme.
** Oddly enough, the original Double Dragon theme starts playing ''within a song'' in Music/{{Dragonforce}}'s [[HeavyMithril "Black Fire"]], and [[PunctuatedForEmphasis IT IS]] GLORIOUS!
** [[http://youtu.be/jxgwZiCM6wA And finally]], the TrueFinalBoss battle with [[OneWingedAngel Giga]] [[BigBad Skullmageddon]] in ''VideoGame/DoubleDragon Neon''.
* One of the best things about ''VideoGame/HalfLife2'' is that music is only played in certain situations, the rest of the game is devoid of BGM. This usually translates into intense battles cranking things up to 11 by adding music. The mad dash through the canals in the Water Hazard chapter or the showdown with the strider in Episode 1 comes to mind.
** You can gauge whether or not it's safe to let your guard down by whether or not the music's still playing.
** Episode 2, when every alarm goes off in the underground.
** In the more traditional sense of this trope, the [[https://www.youtube.com/watch?v=UthQ2gR1bU4 Valve]] [[https://www.youtube.com/watch?v=IRyAuSE949w theme]] itself plays when you finally regain the HEV suit in ''VideoGame/HalfLife2''.
* ''VideoGame/FinalFantasyXIII'' has one for the battle theme; a lively D&B arrangement.
* ''VideoGame/{{Bayonetta}}'' has "Fly Me to the Moon".
* Whenever a character enters [[LimitBreak Border of Death mode]] in VideoGame/{{Touhou}} Soccer 2, the character's accompanying theme takes over as the BGM briefly (assuming that a theme exists).
** Gengetsu, the BonusBoss of ''VideoGame/{{Touhou}}: Lotus Land Story'' gets a remix of the game's title theme. Needless to say, this is your signal that the fight will be a little [[BulletHell intense]].
** An EasterEgg in ''VideoGame/{{Touhou}} Hisoutensoku'' includes this. If Reimu is able to successfully pull off the Fantasy Heaven spell card in Round 3 of a fight, a remix of her theme (only accessible through that spell card) plays in addition to [[ThereIsNoKillLikeOverkill a 330-hit instant KO.]]
** And from the "mainstream" Windows ''Touhou'' games, Yuyuko, the final boss of ''Perfect Cherry Blossom'', gets one of these when she activates her final spell.
** In Hopeless Masquerade, every fight against a character is accompanied by said character's theme as usual... except for Hata no Kokoro's final story mode fight against [[HolyShitQuotient Reimu, Byakuren and Miko]], which is set to her own theme music.
* Used as a game ''mechanic'' in ''VideoGame/BeatHazard'', the more intense the music you plug into it, the more powerful and more spread your shots are. You can also grab volume up powerups to make it that much better. On the other hand, intense music makes explosions larger and makes enemies and their shots that much harder to see.
* In ''VideoGame/{{Pitfall}} II: The Lost Caverns'' every time you grab a treasure or rescue someone a galvanizing, heroic, upbeat theme vaguely reminiscent of the IndianaJones anthem plays. One of the oldest ones in the book, as it was the first console game to feature PSG music, in fact the only 2600 game to have a custom sound chip.
* Also whenever you hear Reunion in ''VideoGame/ThreadsOfFate''. Expect something awesome will happen
* In Bomberman Generation, the boss battles start off with a slower, more foreboding version of the game's ThemeSong. However, when the titular hero brings a boss's health down to critical levels, the music changes to the main theme.
* In ''VideoGame/PokemonBlackAndWhite'', when you've got the Gym Leader down to their last Pokémon [[http://www.youtube.com/watch?v=6FPz7yklWrA this music cues up.]]
** [[http://youtu.be/8s6IkFafrK4 N's Last Battle]] theme.
* The final boss of ''{{Ikaruga}}'' cuts the music for its final form and starts up "Stone Like", a remix of the first level's theme. As an added bonus, if you [[PlayingTennisWithTheBoss play your tennis]] right, the boss explodes right at the end of the musical phrase.
* Meridian Dance plays when the Sword is finally revived in ''VideoGame/SecretOfMana''.
* In ''Anime/DragonBallZ: Raging Blast 2'', when you activate Raging Soul, the battle music turns from normal to the theme song sung by [[JAMProject Hironobu Kageyama]].
* The MedalOfHonor series and it's cousin the VideoGame/CallOfDuty series will usually have the most dramatic music possible occur as you charge headlong into battle.
** [[CrowningMusicOfAwesome Especially]] when [[http://youtu.be/6oD2xQjyAmg storming Fort Schmerzen]] at the end of ''Allied Assault'', and [[http://youtu.be/kyzUJT6isnc driving the King Tiger tank]] in the fifth mission.
** And [[http://youtu.be/TRAnjj43L_w Operation Repunzel]] in ''Frontline''.
*** The BigBad of ''Frontline'', Rudolf von Sturmgeist, gets this when you board his train, and during the final battle with him.
* The N64 / PlayStation ''MissionImpossible'' game powers up the MI theme during the Embassy Escape, Tunnel, and Gunboat levels.
* The true final stage of ''{{Raiden}} IV'' uses [[http://youtu.be/qTUmz6Asd0Q a remix of]] ''Raiden II'''s first stage theme, and the TrueFinalBoss's theme is a metal remix of the ''Raiden 1'' boss theme.
* The River of Souls stage in ''VideoGame/{{Turok}} 2'' uses an extended remix of the game's title theme. In the {{sound test}}, there's another [[CutSong unused remix]] that was apparently intended for the FinalBoss battle.
* The [[http://youtu.be/V_uNB3PnKOc final battle music]] in the original ''SyphonFilter'' is an [[CrowningMusicOfAwesome epic]], [[BossRemix albeit dark]], remix of the series' main theme. Even more prominent in ''Omega Strain'', eg [[http://youtu.be/n_OPVMfLiW4 Carthage Mall]], and [[http://youtu.be/JDs-xlo2pCU Belaya Vezha]], both of which also feature Cherubic Choir / OminousLatinChanting.
* ''TwistedMetal 3'' reprises "[[RealSongThemeTune Meet The Creeper]]" for the final stage.
* The theme song to the [[ShowWithinAShow show-within-a-game]] ''[[SplitSecond Split/Second]]''. Plays during the Elite races, which will most likely be the point of highest tension. Dynamically changes as you pull ahead or fall behind. Only serves to make whatever victories you can pull off against the most springy of RubberbandAI sweeter.
* The TrueFinalBoss of ''VideoGame/BlasterMaster'' reuses the epic Stage 7 theme.
* ''VideoGame/SaintsRowTheThird'' has ''three'' ThemeMusicPowerUp moments. [[http://www.youtube.com/watch?v=L53gjP-TtGE "Power" by Kanye West]] plays when you [[spoiler:parachute onto a rooftop party held by the Syndicate and take the building over for the Saints.]] Later, in a wrestling match with the head of the Luchadors, Killbane, and you have to fend off a ton of his lackeys with a {{chainsaw|Good}}, you get [[http://www.youtube.com/watch?v=E-WHW-QNswE You're The Best Around.]] Finally, [[spoiler:The Boss is forced to choose between killing Killbane before he skips town or rescuing Shaundi and Viola from a STAG plot to blow up the Statue of Liberty expy and frame the Saints. If you choose the latter, [[http://youtu.be/4UpqLhYQz28 this]] plays. There are no words.]]
* ''VideoGame/SaintsRowIV'' cues "You've Got the Touch" when [[spoiler:the Boss dons PowerArmor before the final boss, letting him use all his simulation superpowers in the real world]]
* ''ChildOfEden'' fully powers up "Heavenly Star", the Genki Rockets' SignatureSong, at the end of the final battle, after two remixes of it in the preceding BossRush and SequentialBoss battle.
* In ''VideoGame/SengokuBasara'' when either Ieyasu or Mitsunari face off against each other in the end of their story paths, "Naked Arms" will play in the background. Also, characters will have their Leitmotif play whenever they're fought.
* Inverted in the final boss fight of ''VideoGame/NieR'', where the Shadowlord's very powerful theme gets weaker and weaker as the fight progresses until all that's left is a music box rendition of his theme for his final sliver of health.
* In ''VideoGame/TheElderScrollsVSkyrim'', "One They Fear," a triumphant version of the main theme that occasionally plays during battles with dragons, certainly ''feels'' like one if you can take the dragon down before the song ends.
* The last stage of ''VideoGame/PN03'' uses the full version of the attract/intro music.
* In ''VideoGame/WinBack'', the final boss battle with Cecile reuses the opening theme.
* ''VideoGame/AsurasWrath'', in both a MomentOfAwesome and a HeartwarmingMoment, has [[http://youtu.be/g4CpOUndnfs Surge of Mantra]], which is played upon [[spoiler: Asura getting his ultimate form through the power of prayer and to beat down the will oof the planet's ass flat.]]
* In ''VideoGame/BleachThe3rdPhantom'', whenever a character activates their Bankai [[spoiler: or Release, in Grimmjow's case]], an instrumental version of the game's theme song plays. Same with the cutscene where you acquire (depending on Free Time choices) either Rengoku, Rasen, Shunko, or [[spoiler: Bankai.]]
* In ''VideoGame/KirbysReturnToDreamland'':
** [[http://youtube.com/watch?v=KNCLuYBYwfQ Whenever Kirby gets a Super Ability]].
** Also, the [[BonusBoss True Arena's secret boss]] gets his personal theme for when it TurnsRed. [[spoiler:It's Galacta Knight!]]
** ''VideoGame/KirbyTripleDeluxe'' has the final boss of its Extra Mode [[spoiler:Dededetour]] play his own theme when he TurnsRed. [[spoiler:This time, it's Dark Meta Knight.]]
* The Chapter 1 theme in ''VideoGame/HouseOfTheDead'' is remixed for the FinalBoss battle with the Magician. In turn, this version is reused for the rematch with the Magician in the second game.
* In RazingStorm, during the final battle with [[spoiler: Paulo Guerra in the PS3 sequel,]] the FiveFingerDeathPunch song [[http://youtu.be/owbt1_slgN4 Ashes]] plays.
* The climax of the ''Anime/GalaxyAngel'' [[VideoGame/GalaxyAngel games]] always follows the ThemeSong variant, playing that year's version of Eternal Love (or, in ''Galaxy Angel II'' games, Wing of Destiny).
* During the boss battle against [[VideoGame/{{Gradius}} Vic Viper]] in ''VideoGame/ZoneOfTheEnders: The 2nd Runner'', a [[https://www.youtube.com/watch?v=CQOf1-EdUjk remix]] of the ''Gradius'' boss theme, Aircraft Carrier, will be heard playing during the fight, complete with the crowd in the song chanting "Leo, Leo, Leo, let's go!" since the Vic Viper is piloted by the first game's protagonist Leo Stenbuck.
* This happens twice in ''VideoGame/PaperMarioStickerStar'', both times when an otherwise NighInvulnerable boss is [[AttackItsWeakPoint opened up to your attacks]]. First, when you use a [[spoiler:sponge]] to send the [[DanceBattler musically-inclined]] Gooper Blooper's poison back at him, the music switches to a remix of the original ''VideoGame/SuperMarioBros'' theme. Then, much later, after [[spoiler:Kersti sacrifices herself to give Mario the power to defeat Bowser]], a triumphant version of the series' invincibility theme [[spoiler:mixed with Kersti's {{Leitmotif}}]] starts up.
* The FinalDungeon of ''VideoGame/FalloutNewVegas'' uses an OrchestralBombing arrangement of the main theme, which incorporates either the NCR's or the Legion's {{leitmotif}}, depending on which faction you are supporting, and powers up a step further when you engage the FinalBoss.
** Other incidences include the leitmotif that plays if the Mysterious Stranger perk is taken and he shows up during a battle, and companion ED-E's battle theme whenever it notices and engages an enemy.
* ''TheLegendOfZeldaALinkToThePast'': After all the [[GottaCatchEmAll pendant hunting]], you reach the forest to pull [[InfinityMinusOneSword The Master Sword]] from its resting place. Cue the powerful [[OrchestralBombing "Legend of Zelda" theme music]] as Link and sword opens up a new dimension of whoopass. Even after 20 years, that's still a great moment to play.
* ''{{Overlord}}'' plays with this. The final boss has a remix of the title theme when he gains the upper hand in a cutscene, but the same theme is also used when the protagonist is on the verge of defeating him in the final boss fight. [[spoiler: Since both of them are Overlords it's quite fitting]]
* In StarWars: TheOldRepublic, each class has a Heroic Moment ability (they do gradual healing and usually finish the cooldown on a stun move). Using it triggers that class's CrowningMusicOfAwesome.
* [[Franchise/TheElderScrolls The Elder Scrolls Adventures: Redguard]] has this for an instance of glorious verbal butt-kicking by the protagonist Cyrus. Things are looking dark, the previous goal has failed, your allies are leaving... [[http://www.youtube.com/watch?v=tEPYlJLvcEM&t=4m28s and then the game's theme music softly starts up and Cyrus turns around]] for one hell of a RousingSpeech.
* In ''VideoGame/BanjoKazooie'' and its sequel, activating Wonderwing plays the Banjo-Kazooie title theme. Though not as dramatically, so does donning a pair of the special shoes.
* ''VideoGame/BravelyDefault'' has music that starts playing when you activate a special move. Each character has a [[{{Leitmotif}} different theme]] for this. You also get bonuses after using the special moves, and the bonuses only last as long as the music does.
* As it runs on MagicMusic, this is common in ''VideoGame/ArTonelico''. Most notably with METHOD_REPLIKA, which plays when supercharging an attack spell.
* ''VideoGame/TheSmurfs2'', the videogame adaptation of [[Film/TheSmurfs2 the movie]], has ''WesternAnimation/TheSmurfs'' theme tune play whenever the True Blue Spell is activated.
[[/folder]]

[[folder:Visual Novels]]
* ''VisualNovel/ShinkyokuSoukaiPolyphonica'' features many in-universe examples of this, since the series is based on MagicMusic, which really does power the spirits up.
* ''VisualNovel/MajiDeWatashiNiKoiShinasai'':
** Men are about courage, bgm that was played each time Yamato or any other male character get their MomentOfAwesome.
** Sword Dance, bgm that was played each time Mayucchi get serious in her battle.
** Bushi, song that was played during the battle between Momoyo against three deva of the martial art [[spoiler: which is played when the Otome the last of four devas appears to help Mayucchi and Ageha to defeat Momoyo]].
* Forget opening a can of ass-kicking; If [[http://www.youtube.com/watch?v=cUs8FEsDUZ4 Emiya]] or [[http://www.youtube.com/watch?v=hgAKvZEdHXI Sword of Promised Victory]] starts playing in ''[[VisualNovel/FateStayNight Fate/Stay Night]]'' you know that Shirou and/or Saber are about to open a whole case of ass-kicking.
* PrincessWaltz has [[http://youtu.be/20agR_7VnSQ Battlefield of Steel]] to tell you when something awesome is about to happen. Perhaps the single most awesome moment being [[spoiler: when the ShrinkingViolet Riko transforms into the [[LightningBruiser strong, fast,]] and [[GeniusBruiser calculating]] Liesel right before Arata's eyes just when it looked like they were cornered by the token monsters.]]
* ''PhoenixWrightAceAttorney'' uses this trope to extremes unplumbed by man, playing it straight and subverting it at will as the case swings back and forth in and out of Phoenix's favor. A DoubleSubversion occurs in the first game's third case: Phoenix is out of ammo, the witness/killer is about to get off the stand... and then "[[http://uk.youtube.com/watch?v=Cy2QYE90BUI&feature=related Investigation ~ Cornered (Variation)]]" (very dramatic and heroic music) starts up as Edgeworth objects to keep the witness on the stand. The music dies as [[ThatWasObjectionable Edgeworth realizes he doesn't have a question]], the judge is about to let the witness go... and then the music starts up ''again'' as Edgeworth has a burst of inspiration.
** Note that in the second trial, when [[spoiler:Phoenix first has White about to confess]] the music starts up for ''Edgeworth'' as he proceeds to help weave a false testimony, triggering part two of the confrontation. The music starts up again when Wright has [[spoiler:White]] cornered for the second time, and Edgeworth attempts to obscure the truth once again by extending the trial.
** The second game uses this in an interesting way: [[spoiler:Edgeworth returns from a JourneyToFindOneself. Part of the sign he found what he was looking for is that he has gained his own theme music.]]
** This happens again in ''Trials and Tribulations'' when [[spoiler:Phoenix finally backs Godot into a corner, exposing as the true "murderer" of Misty Fey. As he does, the "Cornered" song from the first game reappears. Mia Fey's spirit even shows up to cheer Phoenix on.]]
** In fact, the use of this trope verges on being a ''gameplay element''--whenever you present the correct evidence at a contradiction, [[MusicalSpoiler the cross-examination theme will]] ''[[MusicalSpoiler always]]'' [[MusicalSpoiler stop as Phoenix objects]], in preparation for the heroic music to start up once he points out the contradiction. If you're wrong, the music will just keep going as he takes a penalty. Save right before every objection you're not sure of, and wait for the music cue with your finger on the power switch in case you were wrong...
*** And in the second to last piece of evidence of the third game (the one with the first game's "Cornered" theme) the music always stops and Godot's next line is the same if you present the right piece of evidence or not.
** In the fourth game, the prosecutor was a guitarist for a band and his theme music turned out to be one of his actual songs. Further, he will perform '''awesome''' air guitar in court, which does everything from double your penalty bar to break down a witness.
*** In a bit of {{fridge logic}}, the theme will play in a {{flashback}} to before the song was written.
** Don't forget Godot. He has his own smooth jazz {{Leitmotif}} as his CELL PHONE RINGTONE.
** Appropriately, this carries over to Phoenix Wright's appearance in ''Ultimate MarvelVsCapcom3''. While his normal theme song is the first game's "Objection!", whenever he gathers enough evidence to go into [[SuperMode Turnabout Mode]], this (as well as any other theme that is playing) will be replaced by the iconic "Cornered" theme.
** Remember Edgeworth's awesome theme song from the second game? The one that became the BigDamnHeroes theme song for the next two games? It's received a remix on his own game, ''AceAttorneyInvestigations'', to be his Objection! theme. And on the second one, it's basically the ground stone for every theme involving him.

[[/folder]]

[[folder:Web Comics]]
* ''Webcomic/TheAdventuresOfDrMcNinja'' has to sing along to the ''Film/{{Ghostbusters}}'' theme in order to empower himself to do battle with ethereal beings. Not the lyrics though, just the tune: "Dada, Dadadada!" The technique is common to all ninjas, although methods vary; only the Doctor actually requires the Ghostbusters theme specifically.
-->'''Doc:''' [[CrowningMomentOfAwesome I]] [[HellYesMoment AIN'T]] [[SuddenlyShouting AFRAID]] [[PunctuatedPounding OF]] [[PreAsskickingOneLiner NO]] [[http://drmcninja.com/archives/comic/20p68/ GHOSTS!]]
* When Aerith and Zexion played ''OneWingedAngel'' in the murder-off in ''Webcomic/AnsemRetort'', it was intended to [[BrownNote stop Cloud]]. They didn't figure out until too late that it was also Axel's ThemeMusicPowerUp.
-->'''Namine:''' Okay, we stopped Cloud, but do you think there might be a reason that this song was on Axel's murder mix CD?
-->'''Zexion:''' Oh shit...
-->[cut to Axel setting everything on fire]
* For a webcomic, ''Webcomic/{{Homestuck}}'' has a ''lot'' of songs used in this fashion for flash updates, but the best example is probably "Sburban Jungle", which was first used for the LoadingScreen when John installed Sburb. However, it gets remixed for both the End of Act 3 and Act 4 animations to signify that some [[CrowningMomentOfAwesome seriously awesome shit is going down.]]
** Dave's theme song, ''[[http://homestuck.bandcamp.com/track/upward-movement-dave-owns-2 Dave Fucking Owns At This Game]]'', appears to have been promoted to an all-purpose power up theme song, as it's been renamed ''[[ArcWords Upward Movement]]'' and features prominently in the [[CrowningMomentOfAwesome End of Act 4 animation.]]
** John's theme, [[http://homestuck.bandcamp.com/track/doctor-2 Doctor]], gets the same treatment, eventually being hijacked by [[PhysicalGod Jade]] in [[CrowningMomentOfAwesome Cascade]].
* A very literal variant in ''Webcomic/GirlGenius''; Agatha (the main character) starts playing a very complex version of the music she always hums while working during a climactic battle. As an added bonus, it controls the clanks (robots) she's made.
[[/folder]]

[[folder:WebOriginal]]
* ''WebVideo/AtopTheFourthWall'': Although not his own theme song, [[Linkara]] makes use of the PowerRangers theme song when, after being beaten to a pulp by his cyborg counterpart Mechakara, he gets an HeroicSecondWind and morphs into "Internet Reviewer," after which he proceeds to kick Mechakara's ass.
* ''RedVsBlue'': After the animation got kicked up the series started denoting the shift into the epic CGI action phases with this trope. Most evident when the teams unite to take on [[spoiler:the army of Tex clones]] in Season 10, using the classic theme song.
* In ''WebAnimation/DeathBattle'', The music usually shifts to a song from the character's soundtracks when they get the upper hand.
** [[WesternAnimation/HeManAndTheMastersOfTheUniverse1983 He-Man]] is by far the worst offender of this trope so far. Every time he takes the lead, "He-Man!" very audibly bellows out in triumph.
* ''Podcast/WelcomeToNightVale'''s theme plays when [[spoiler: Cecil takes back the studio]] in episode 48.
[[/folder]]

[[folder:Western Animation]]
* Averted in "Leapfrogs: Numbers Ahoy!" When the young male protagonist mispronounces the villain's name, the dread!Theme actually pulls itself off the record.
* ''TheRealGhostbusters''. The chorus and some of the instrumentals from the Ghostbusters theme song would sometimes play, typically starting during formulation of the plan (which is usually CrazyEnoughToWork) to defeat the episode's BigBad, and then afterwards during the FinalBattle with the BigBad itself; which often also involved Egon coming up with a brilliant IndyPloy during combat.
* The ''{{Popeye}}'' cartoons, with Popeye's spinach-induced theme music, a fanfare remix of the "Popeye the Sailor Man" theme. Some could say the original shorts were among the earliest innovators of this trope.
* Lampshaded in an episode of ''WesternAnimation/TheThirteenGhostsOfScoobyDoo'', where the ''Popeye'' theme plays as Scooby downs a box of Scooby Snacks.
* The heroes of most shows in [[{{DCAU}} the animated DCU]].
** In one episode of ''JusticeLeagueUnlimited'', Green Arrow even sang along to his theme as he kicked butt.
** In the ''JusticeLeague'' episode "Hereafter", Batman fights Kalibak while a fairly quiet orchestral version of the 1966 TV theme song plays in the background.
** The Joker in ''WesternAnimation/BatmanTheAnimatedSeries'' would hum his own theme music on occasion.
** ''WesternAnimation/BatmanBeyond'':
*** A particularly awesome example comes from the episode "Disappearing Inque". Terry gets kidnapped by the villainess Inque, and she threatens to kill kim unless Bruce shows up. Later on, we see a large figure in a trench coat walking towards Inque... which turns out to be Bruce, in a massive Batman mech suit. The moment he starts whaling on her, an orchestrated version of the Batman theme from ''Batman the Animated Series'' starts playing.
*** Something similar happens in another episode where Bruce, rejuvenated by a couple dips into a Lazarus Pit, fights side-by-side with Terry, with the ''BTAS'' theme going, except it's electric guitars instead of trumpets soaring.
* Parodied in the ''WesternAnimation/SouthPark'' episode "Towelie", as whenever the titular Towelie got high, Popeye's theme music played and Towelie became dumber than he already was.
* Most of ''WesternAnimation/KimPossible'''s flipping, fighting, and swinging is accompanied by a guitar-and-strings action {{leitmotif}} that's re-used in every episode. A few of the recurring villains also get their own theme music; the mini-episode "Adventures in Rufus-Sitting" features a four-way fight in which the soundtrack changes several times in the space of a few minutes to reflect whichever combatant currently has the upper hand. Check out [[http://www.veoh.com/videos/v9543065rcW5gPy this clip]].
* The ''WesternAnimation/{{Futurama}}'' {{OVA}} "Bender's Big Score" has the climactic battle with the theme playing the background.
* The fifth season finale of ''WesternAnimation/TeenTitans'' (not counting the ''last''-last episode) has a particularly stirring version of the show's theme playing during the final battle with the Brotherhood of Evil.
* Played at the climax of "The Drill" in ''WesternAnimation/AvatarTheLastAirbender'', as Aang hands Azula one of her few outright defeats in the series.
** Not to mention during the [[WhamEpisode Season 2 Finale]], any time Aang enters the Avatar State, and most especially during the climactic fight with Fire Lord Ozai. One of the coolest versions ever actually plays during the end credits after the series wraps up.
** Side note: Aang's [[{{Leitmotif}} theme song]] is actually a remix of the main theme.
*** Same motif is played during a flashback episode featuring Aang's predecessor, Avatar Roku, describing the amazing power he became master over when he learned all the bending arts.
* In ''WesternAnimation/PacManAndTheGhostlyAdventures'', this is standard fare - whenever the title hero's about to do something awesome, his theme kicks in--not the show's theme, his ''personal'' theme: "Pac-Man's Park", which was brought back all the way from ''Pac-Mania'', where even ''there'' it was a remix of the cinematic song from the original game. In short, the new Pac-Man has the same leitmotif of the original Pac-Man.
* ''TransformersTheMovie'' has "The Touch" by Stan Bush, most memorably played during a FoeTossingCharge by Optimus Prime, and also when the Matrix of Leadership is opened near the end of the movie. Some fans theorize that Megatron and the Decepticons also received a power-up from "Instruments of Destruction" during the attack on the shuttle where they [[DroppedABridgeOnHim killed Prowl, Brawn, Ratchet, and Ironhide in about ten seconds]]. One can probably make an argument for "Dare to Be Stupid" for the Junkions.
** Optimus in a post-movie ''WesternAnimation/TheTransformers'' episode still has "The Touch" in "The Return of Optimus Prime" when he opens up the Matrix of Leadership to wipe out the HatePlague. His eventual successor, [[TransformersSuperGodMasterforce Ginrai]], gets the rather cool "Don't Cry".
** ''TransformersCybertron'' gave us the instrumental song "Our Ally". Ass-kicking ensues whenever it plays. It has been favorably compared with The Touch. It most notably accompanied [[spoiler: [[Awesome/{{Transformers}} Optimus Prime running Galvatron through]]]].
* In ''{{Thundercats}}'', Lion-O got to trigger his own theme music when he powered up the Sword of Omens. Ta-ta-TAA! And not only did he get to start kicking ass, but all the other Thundercats, no matter where or how captured/restrained they were, could see the Lion-signal, hear the roar, and naturally break free.
** This also applies to the other Thundercats with their own {{Leitmotif}}s any time they're kicking ass individually. Panthro's can be especially epic, as the Leitmotif ''itself'' gets powered up if he's doing his ass-kicking in the [[CoolTank Thundertank]].
* In the first two season finales of ''WesternAnimation/{{X-Men}}'', a particularly rousing take on the show's theme backs up the heroes in the final battle. Then the third season started applying it to roughly every other fight they got into, and it kind of lost its potency.
* ''WesternAnimation/HeManAndTheMastersOfTheUniverse1983'': He-Man's [[ByThePowerOfGreyskull transformation sequences]] are always accompanied by stirring theme music, no matter what incarnation you're referring to.
** Even in the Live Action movie, where He-Man has no alternate persona and therefore doesn't have a transformation sequence, gets a musically enhanced Power Up when necessary. [[http://uk.youtube.com/watch?v=7ceERPc3pyw He Has the Power!]]
* In ''CodeLyoko'', William gains a personal music theme in Season 4 [[spoiler:after he turns evil]]. It follows him in each of his subsequent appearances, which are generally the most intense fights in the show. (He isn't always victorious, though.)
** On Lyoko, the sound effects seem to be having fun whenever the gang's about to win or lose.
* InspectorGadget used this all the time: a version of Penny's theme would often play just as she's about to turn Dr. Claw's newest scheme upside down. Brain would occasionally get these as well, but less often (more often his theme would be played during particularly funny scenes).
* Any time that CaptainPlanet is summoned. Most of the time it's the title theme, but there are a couple of other music cues that are equally awesome.
* In the first episode of the '80s ''[[WesternAnimation/TeenageMutantNinjaTurtles1987 Ninja Turtles]]'' toon, the turtles discover that the Foot Ninja they're fighting [[RoboticReveal are actually]] [[MechaMooks robots]], and the theme music starts up as they proceed to go to town on them.
* TheEighties loved this one. On ''[[WesternAnimation/AdventuresOfTheGalaxyRangers Galaxy Rangers]]'', once you heard the electric guitar music, you knew ''something'' awesome was coming in.
* On ''WesternAnimation/LiloAndStitchTheSeries'', the show's theme song "Aloha E Komo Mai" would usually play in an upbeat rock format whenever Stitch or someone else was kicking major butt.
* Whenever {{Mario}} (and/or Luigi) powered up in ''SuperMarioBrosSuperShow'', the transformation was accompanied by the "level clear" fanfare from ''VideoGame/SuperMarioBros2''.
* In ''TheBigKnights'', whenever Sir Morris and Sir Boris are about to perform their idea of heroics (which usually means [[BoisterousBruiser smashing everything]]), the show's thunderous orchestral theme music kicks in.
* The season one finale of GeneratorRex uses the theme tune when [[spoiler: the heroes take back their headquarters from Van Kleiss' forces]].
* In the first ''{{Shrek}}'' film, the familiar strings of Joan Jett's "Bad Reputation" start to play when things start to turn in the titular ogre's favor during the wrestling match in Duloc.
** Probably an odd case combined with HesBack in ''[[{{Shrek2}} Shrek 2]]'', when Shrek, Donkey and some of the others race to rescue Princess Fiona while the Fairy Godmother's singing "Holding Out for a Hero". It's kind of an inversion since the song [[VillainSong was sung by the villain.]]
* ''ThomasAndFriends'' sometimes does this whenever one of the engines does something particularly competent. Perhaps most notable for James, who actually had a slow dramatic version of his theme to play when he was triumphant (eg. taming an exceptionally unruly bunch of trucks).
* ''TheDreamstone'' sometimes played "Better Than a Dream" whenever the heroes got to business. Usually subverted with the Urpneys, whose anthem usually played as they were goofing up (though played straight in "The Dream Beam Invasion", where the theme plays as [[TeamRocketWins they sabotage dreams and later scare off the heroes]]).
* In the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episode ''[[Recap/MyLittlePonyFriendshipIsMagicS4E26TwilightsKingdomPart2 Twilight's Kingdom Part 2]]'', the Mane Six transforming into their [[SuperMode Rainbow Power forms]] is accompanied by track that sounds like a remix of the theme song.
[[/folder]]
----