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Theme Music Power-Up
aka: Theme Song Powerup
"64. When your show's opening theme song starts to play, your enemies are fucked."

A character's strength and abilities are directly proportional with how cool their 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 Badass Normal 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 Invincibility Power-Up; see Power Up Motif.

If a Theme Music Power-Up is defeated, then it's The Day The Music Lied. If it's in particularly spectacular fashion, it may end with a Record Needle Scratch or by Letting the Air out of the Band (or, if you're really unlucky, a Last Note Nightmare).

Ominous Latin Chanting, the One-Woman Wail, or the Cherubic Choir are popular choices for this, as are a techno beat or heavy metal riff.

Sometimes, near the end, the series Theme Song will play, allowing every good guy to kick some major rear at the Grand Finale. This is a Last Episode Theme Reprise.

Compare Autobots, Rock Out!, Most Wonderful Sound, Power Up Motif, Music for Courage, Near Victory Fanfare, and Musical Spoiler (the last of which is arguably a Super Trope).


Examples:

    open/close all folders 

    Animated Film 
  • WALL•E uses an old song from the musical Hello, Dolly! as their power-up. WALL•E seeing his team gathered to follow him turns on the song and we hear the lyrics, "Put on your Sunday clothes when you go on the town."

    Anime & Manga 
  • This was also done by Neon Genesis Evangelion. Whenever EVA-01 is about to kick some ass and tear some unfortunate Angel a new one, either The Beast or The Beast II plays. The Beast II is even used for such moments in the crossover Super Robot Wars games. Also, in the series' original Mind Screw 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, The Heady Feeling of Freedom, and a piano and guitar version, Good, or Don't Be, in succession.
    • Rebuild gives Shinji his own Theme Music Power up with Sin From Genesis, a remix of Beast II that plays over his epic beatdown of Zeruel.
      • In End of Evangelion, 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.
  • Kara no Kyoukai has Shiki's unofficial theme "Seventh Heaven" played several dozen times over the course of the series, but it gets kicked up a notch or two for her fight scenes.
    • Whenever Yuki Kajiura 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 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 Big Bad gets ass handed to him" thing, playing the theme from Next.
  • Usagi of Sailor Moon had several theme songs based on The Power of Friendship. The Outer Senshi have their own Rule of Cool 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 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.
  • 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 instantly defeated as well.
  • Hiroyuki Sawano & Mika Kobayashi have made an art form out of this trope:
  • In 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 Noir. ''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 The Other Wiki even mentions it. It is a joke among fans that the word gives Madlax super powers.
  • The Twelve SISTERs of Coyote Ragtime Show.
  • 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 No-Holds-Barred Beatdown on whoever's in his way—complete with some snarky deconstruction of whatever BS the poor yutz was trying to spout at the time.
  • Yu-Gi-Oh! 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 Theme Music Power-Up spots.
  • During Episodes 18 and 19 of the Yu-Gi-Oh! GX 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.
  • Yu-Gi-Oh! 5Ds 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 Fan Nickname 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.
  • Dokkoida?!?! hangs a 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 manages to get the same effect just from suggestion and enjoying the Hot-Blooded music.
  • Pretty much every evolution sequence in every season of 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.
    • Digimon Savers adheres doubly so. There's a set of leitmotifs for various stages of evolution, but whenever the J-Rock theme tune "Believer" cues up, you know the Monster of the Week is about to get beaten in a spectacularly flashy, Hot-Blooded 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 leitmotifs.
    • 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 Spine Chilling rendition of the Digimon theme. However, the movie took a different route with the actual fight scene, which was treated to a ear-rendingly bad licensed pop-rock song that is completely at odds very different but still equally good song that still fits with the Curb-Stomp Battle being shown.
      • Another The Movie 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: "DI- DI- DI-..."
      • From the same fight, after Greymon blacks out (Parrotmon is a 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, as round two is much shorter.
    • Four words: We Are Xros Heart! (even a version X7!), Evolution and DigiXros Taiki (or Kiriha)! When that music plays, you know someone is going to curbstomp something.
  • Cardcaptor Sakura 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 Tengen Toppa Gurren Lagann. Eventually they get so powerful that they actually get those lyrics superimposed on an 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 'ROW ROW FIGHT DA POWAH') One for Kamina, one for Gurren-dan, after Kamina's death, and "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 He's Back moment), and the full version of the show's theme, Sorairo Days, used when 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 Surprisingly Good English 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. 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 Surprisingly Good English 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.
  • Futari wa Pretty Cure: 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, the theme song was played with lyrics, which was both at once and thus gave Pretty Cure the ability to defeat the Jaaku King for real this time.
    • The All Stars Deluxe movie does this a total of four times. 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.
    • Heartcatch Precure 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 (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 Big Bad Dune) it's played straight.
  • In 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 truly EPIC !!
  • Konjiki No Gash Bell 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 Hajime No Ippo 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, Nana Mizuki, start to sing her insert song for that season of Magical Girl Lyrical Nanoha, 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 "Ace of Aces" battle theme.
    • The aptly named "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 Wave Motion Gun.
  • Likewise, whenever "Meteor" or "Vestige" play in Gundam SEED or 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, to winning the day when Kira and Lacus show up.
  • G Gundam had two themes dedicated to Domon's Finishing Moves, "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 Eureka Seven 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, "Storywriter" begins playing.
    • The first opening song, "Days", also lends itself to a Theme Music Power-Up for Renton and Eureka in Episode 32.
  • The James Bond-ish opening theme tune in Read or Die 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 the sequel, strap in tight, because someone's about to kick some major ass.
  • Plenty of instances in Naruto:
    • In Part I, the titular character had several "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 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 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 All According to Plan.
    • 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 Curb Stomping.
  • In Hellsing, Seras Victoria transforms into a Draculina and tears through her enemies as Suilen's beautiful, haunting 'Zakuro' plays in the background.
  • In Dragon Ball Z, 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.
    • Dragon Ball Kai 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 Curb-Stomp Battle 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 Shakugan no Shana cast get one in the climax of the fight against Sabrac in the form of "JOINT" in Season 2.
  • Death Note
    • Whenever Light reveals how soundly he Out-Gambitted someone, just in case we had forgotten what a Magnificent Bastard he is.
    • Likewise, whenever L really gets going, his guitar theme music flares up to match.
    • 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 Katekyo Hitman Reborn!, 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, Hell and Heaven and the 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 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 Saikyo Yuusha Robo-Gundan plays.
  • The Pokémon 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 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 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 Stellvia of the Universe is accompanied by various theme music pieces, including the OP. The sheer awesome of its Grand Finale 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 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 Paranoia Agent, where the Theme Music belongs to Big Bad Lil' Slugger. If it starts playing, you're extremely screwed—Slugger gets the powerup.
  • Macross, 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 The Movie 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.
    • Macross Plus featured an interesting variation. The music that powers up is not the fast paced songs but 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 The Power of Rock. Literally, listening to Basara's singing causes creatures to regenerate Spiritia, something the villains suck out and causes a person to go comatose. In the Grand Finale, his power up was so awesome that it overrode the Big Bad'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 Brainwashed and Crazy Gamlin.
    • Macross Zero inverted this. The Song of Ruin is not a good thing for people since it involves a somewhat Brainwashed and Crazy version of Sara controlling the Bird Human, a massive thing that promptly began to raise total hell.
    • Macross Frontier does this a lot, especially Episode 7. In Episode 14, 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, 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 is pretty much THE defining example of Macross Theme Music Power Ups, combining almost every song in Frontier plus "Do You Remember Love?"
  • Genesis of Aquarion has a Theme Music Power-Up 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.
  • Umineko no Naku Koro ni: For the protagonists "worldend_dominator", "Far", and "Dread of the Grave" are all indications that a Crowning Moment Of Awesome will happen. For the antagonists it will be "happiness of a marionette", "mirage coordinator", "Golden Smile", or "Moon Rabbit's Dance".
    • "dreamenddischarger" takes this to another tier entirely. So does "the excecutioner", but only for the Big Bad.
    • Higurashi no Naku Koro ni'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.
  • Princess Tutu. 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 Devil May Cry anime has a pretty cool theme song, which plays during the final episode when Dante activates his Devil Trigger to finish off the Big Bad. 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 Crowning Moment Of Awesome.
  • Burst Angel only has this happen in the last episode, when textbook Distressed Damsel Meg, Percussively Prevented by her partner Jo from suicidally Storming the Castle, finally starts to stand on her own, taking the first steps toward Taking A Level In Badass.
  • Shikabane Hime played the Opening Theme over Makina and Yamagami's first fight with Akasha to let them fight his horrible evilness.
  • Once YOU WA SHOCK / 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, they are already dead.
    • One aversion however, is Jackal, a powerless 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.
  • Vision of Escaflowne does this sometimes. When the "Dance of Curse" starts playing expect some serious fighting.
  • One Piece 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.
    • after franky is intruduced expect his theme to play whenever franky is going to be/is kicking ass.
  • Outlaw Star has 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 The Third!, most notable One-Woman Wail "Sword Dancer" during first and tension rising "Storm on the Battlefield" during last battle.
  • Most fights in The Law of Ueki 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 Black Lagoon 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 Whitman Fever.
  • In the final episode of Ouran High School Host Club the ending theme starts early as 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 Downer Ending, and the episode had a special ending to avoid repeating.
  • Whenever Athena's Saints in Saint Seiya mustered their courage and burned their Cosmo beyond its limits, they'd receive either 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.
  • Transformers Victory's opening theme music plays whenever Star Saber does something particularly awesome. Road Caesar and Landcross each have their own remixed version.
  • In Seto no Hanayome, San's "Song of Heroes" is a Theme Music Power-Up, thanks to the Mermaid's Ancient Lyrics. Any time San starts singing it, Nagasumi is about to do something impossibly badass. And then there's the time that Nagasumi pulls it off before San starts singing, because he's just that pissed off. The "Song of Heroes" starts picking up just as the asskicking begins.
  • Keroro Gunso example. In Episode 103, just as 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!
  • Revolutionary Girl Utena: The Movie: "Let's go, Utena. To the outside world." ~Oooohhhh, yeeeaahhhh...~
  • In Soul Eater Soul does this quite literally, as he is able to play a (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 can make a keyboard out of his arm and play whatver music will make a person go insane.
  • In the Mazinkaiser OVAs, 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.
    • Shin Mazinger 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.
  • Tekkaman Blade: 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 Mobile Suit Gundam 00 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.
  • Cowboy Bebop: In the final episode as 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. Crowning Music of Awesome 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 Big Bad
    • 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 Fullmetal Alchemist has the fight against Sloth, where Olivier Armstrong is cornered and 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 Izumi's husband and aforementioned brother meet for the first time.
  • Shaman King poses a subversion in 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.
  • To Aru Majutsu no Index has "Jellyfish" by Mami Kawada. This plays when Index is alone and Sherry Cromwell's Golem attacks her. 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 easily repels the Golem's attacks until Touma comes along and cancels the whole summoning.
  • A Certain Scientific Railgun
  • The North Maiden of Star Driver always starts to sing before that episode's giant robot battle.
    • With her being put on a boat resident Genki Girl Mizuno seems to have taken over for her.
      • And now with Mizuno leaving, TMPU has fallen to the East Maiden Keito.
  • In The World God Only Knows, the opening theme plays when Keima goes into God of Conquest mode in episode 12 of Season 1.
  • The final battle (against The Rival Papillion) in Busou Renkin 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 Humongous Mecha.
  • When Shin Getter Robo uses Stoner Sunshine against Shin Dragon, a Bad Ass Theme Music Power-Up starts up raising the level of epicness in the scene.
  • When they made 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 Latooni and Schine debut their Fairlions to the tune of a vocal version of ''Dancing Faeries'', their shared theme.
  • In Nerima Daikon Brothers, 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 F-Zero anime, starts up during that famous scene at the end, where Captain Falcon jumps out of his Blue Falcon and FALCON PUNCHES Black Shadow to his death.
  • Black Butler has a discordant version of "London Bridges Falling Down" play during Sebastian's final battle with Ash/Angela at the end of the first season. Seriously. And in context it was awesome.
  • Panty & Stocking with Garterbelt 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 Climactic Battle Resurrection at which point you will cheer and applaud when it plays.
  • Zoids: New Century Zero has Strike Lazer Claw!
  • Happened a few times in Sonic X. 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 Street Fighter II: The Animated Movie, Ryu and Ken's Final Battle against M.Bison is set to "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 heroine's favor, she still won though.
  • 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 original game's battle Theme Tune, "Reach Out To The Truth," and he faces out, he holds out, he casts his fishing line and finally catches the Guardian.
  • In Rental Magica, 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. Except that one time in the last chronological episode, where he abused it just to get them to listen.
  • When 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 two play, major ass-kicking is about to ensue. There's also "Fairy Law / Makarov's Theme" for when a character decides to take Magic badassery Up to Eleven, usually Makarov but also notably Gildarts.note 
  • Rurouni Kenshin 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.
  • Irresponsible Captain Tylor likes to play with this. Whenever Straight Man Lieutenant Yamamoto tries to do something awesome and profound, his theme song starts up—a militaristic, Music to Invade Poland to-ish piece that brings to mind Toshiro Mifune'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 Record Needle Scratch, usually followed by a few seconds of complete silence while everybody in the area stares at him in gobsmacked disbelief.
  • In Puella Magi Madoka Magica, Mami has a 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 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 Final Fantasy: Unlimited are subject to this.
  • We get a very literal example in Senki Zesshou Symphogear in which Symphogears are actually activated by the girls singing their theme songs.
  • In Fooly Cooly (or Furi Kuri or FLCL) Little Busters plays every time Nao merges with Canti, becoming Atomsk, and most other times Atomsk appears to save the day.
  • Played straight in Crush Gear Turbo. Interestingly, being a shonen show, the Theme Music Power-Up also applies to the rivals.
  • There must have been some kind of clause in the developmental contract for Valvrave the Liberator that this had to happen at least every other episode. Because this happens a lot.
  • Space Battleship Yamato 2199 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 White Comet Empire gets an Early-Bird Cameo with their theme song playing and is curbstomped by Domel.
  • Heavy Metal L Gaim' does it in the very first episode, when during the second half of Shingeki L-Gaim an instrumental version of Time for L-Gaim'' kicks in. By the time it ends, the fight is over.

    Fan Works 
  • In Zany To The Max, 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.

    Films 
  • The director's cut of The Expendables 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 Long Song, Short Scene situation despite Sylvester Stallone personally commissioning the song for use in the film.
  • Subverted twice in a very short time in the Lord of the Rings 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 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 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 Heroic Sacrifice to give Frodo a chance to destroy the Ring.
  • The main theme of Once Upon a Time in China 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 Big Bad.
  • In Quentin Tarantino's Kill Bill, whenever the theme from Ironside starts playing, the Bride is about to go completely vicious on someone.
  • Indiana Jones has his distinctive theme play whenever he does something Especially Awesome.
    • Said theme was so awesome that Turkish Star Wars shamelessly stole it and used it for Every. Single. Freakin'. Fight scene.
  • James Bond is in the rare and enviable position of having two Theme Music Power Ups — the "James Bond Theme", and the music from the opening titles of each movie. See the pre-credits sequence from Tomorrow Never Dies for a particularly badass example. On the other hand, if the opening song is a Villain Song, Bond had better watch out when it starts playing on the soundtrack. Example: Gold Finger's aerial raid on Fort Knox, set to a thunderous version of his The Villain Sucks Song.
  • In the 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 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 'The Matrix'', when Neo becomes 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 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 Kung Pow! Enter the Fist, 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 Scooby-Doo 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 Austin Powers 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, it is not quite enough.
  • The first twenty seconds of the track "Beelzeboss" from Tenacious D in the Pick of Destiny act as a Theme Music Power-Up for the Devil.
  • At the end of Pirates of the Caribbean: 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 Pirates of the Caribbean 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 Pirates of the Caribbean: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
  • Excalibur, which popularized "O Fortuna".
  • Star Wars has a general rule: if the "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.
    • Return of the Jedi gives Luke a big Theme Music Power-Up in the Sarlacc pit scene.
    • The Emperor gets one as well when his rather creepy theme plays as he electrocutes Luke with Force lightning. Has elements of The Day The Music Lied, though, since that's when Darth Vader returns to the Light side of the Force and saves Luke.
    • Also, of course, there is a general rule in all Star Wars films that if you can hear Imperial March, it means The Dragon is being awesome again.
    • Even detractors of the Star Wars prequels admit that one of the coolest moments in the series was near the climax of The Phantom Menace 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 "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 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 do the magic that needs to be done.
  • When it's time for a dogfight, what's the first thing the hero does in Iron Eagle? Put some rock into his tape deck, of course.
  • In Godzilla Final Wars, 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 Galaxy Quest, 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 Big Bad, 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 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.
  • "Yor's world, he's the man!"
  • Two moments from Star Trek: First Contact spring to mind: the battle against the Borg cube at the start of the movie, where the Enterprise swoops to the rescue to the sound of an absolutely epic fanfare, and the fight on the deflector dish, where each time the Borg gain the upper hand, a more thunderous version of their Leitmotif plays.
    • In 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 Lock and Load Montage.
  • Pretty blatant in the climactic fight scene of Only the Strong, a 90's action film about capoeira (a Brazilian martial art): the main character is about to be killed by the Big Bad, 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 Optimus Prime enters the big ending battle in both movies, the music soars as Prime either epically transforms or 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 The Good, the Bad and the Ugly, a burst of the theme music plays as Blondie asks Tuco "Were you going to die alone?" and joins him to fight Angel-Eyes' men.
  • Happens subtly in Star Trek. If you hear a snippet of the main riff from "Enterprising Young Men", ass-kicking will soon ensue. Especially egregious when Sulu gets dangerous.
  • In 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 Beverly Hills Ninja, there is a fight with the obligatory Kung Fu Fighting by Carl Douglas. When the fight gets more intense, it hilariously speeds up.
  • The Man Who Saves the World 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 Indiana Jones theme.
  • Once Upon a Time in the West 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 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 Batman Returns 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 Batman Begins).
  • Conan the Barbarian (1982) by Basil Poledouris.
  • Quite a few times in RoboCop (1987), score also by Basil Poledouris. RoboCop's leitmotif plays when he goes out on his first patrol, when he shoots up a drug lab, during his fight with the robot ED-209, and the Final Battle with 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 Parking Garage scene where his theme appears in a sad, minor-key version because the entire Detroit police force has turned on him and is firing at him while he struggles to defend himself.
  • If the song "We Are Sex Bob-Omb" can be seen as Scott Pilgrim vs. The World's theme, he definitely gets a power up from it before the final fight. Twice.
  • In 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 Thor kicks into high gear when the eponymous hero'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 and prepares to banish Thor from Asgard.
  • Blatant in Jimmy Neutron: The Movie - 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 Dawn of the Dead. 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 Downer Ending, which is actually what the original script called for.
  • Kick-Ass, Hit-Girl and "Bad Reputation"; exactly as it says in the title ensues.
  • Invoked in The Avengers: When Iron Man arrives on the scene, he hacks the nearest speaker system (which happens to be Black Widow's jet) to play AC/DC.
    • 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 Jurassic Park during first film's crowning moment of Tyrannosaurus.
  • Whenever the main theme is playing, something awesome is happening in Pacific Rim, 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.
  • The Lone Ranger: When the classic Lone Ranger theme starts to play, you know things are about to get real!
  • In Superman II, a supposedly-depowered Superman literally kneels before Zod, takes Zod's hand as if to surrender and swear loyalty... then crushes his hand and tosses him into a pit as the John Williams theme plays.
  • In Con Air Cameron Poe's fight with both Cyrus and Billy also during his run/drive in the boneyard.

    Literature 
  • An affectionate parody: Acheron, the Atlantean god-turned-vampire warrior of Sherilyn Kenyon's Dark-Hunters series, has "Sweet Home Alabama" for his theme music.
  • Artemis Fowl sometimes has Plotting Music in his head when he's coming up with his plans. It's generally classical, like Beethoven's Symphony No. 7.

    Live Action TV 
  • Xena: Warrior Princess, as sung by the Bulgarian Women's Choir.
  • Numerous examples in Power Rangers 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 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.
    • At times in Wild Force, if there were no music during a Ranger fight, you know they're going to get whupped.
  • Happens in Super Sentai too... although Chikyuu Sentai Fiveman took it too far.
    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)Aba-Aba-Aba-Aba-Abaranger!
    Umeko: What the heck was that?
    Jasmine: Don't know either. It was on loop in his brain.
  • The A-Team theme tune, during each episode's A-Team Montage.
    • Has been lovingly taken up by Top Gear, 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 A-Team Montage by saying, "And then it was time to cue the music ..."
  • Kamen Rider Den-O 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 Theme Song 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. Grand Finales usually involve the "series Theme Song" variant, while the debut of Sixth Rangers usually gives them a specialized theme. 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 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 Kamen Rider Double, plays exactly three times during the series: during the fight where the Riders finally get the upper hand on the Weather Dopant, in the penultimate episode when Shotaro faces off against the Utopia Dopant without transforming into Double, and at the end of the final episode when Shotaro and Phillip become Double for the first time in a year and defeat the Energy Dopant. It also gets played in The Movie during the final battle with Kamen Rider Eternal, specifically when Double gets his Eleventh Hour Superpower and Rider Kicks Eternal into the stratosphere.
  • Doctor Who never uses the main title theme itself in the scores to the episodes. However, in the new era:
    • The Doctor had "The Doctor's Theme" in Seasons 1 and 2 supplemented by "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), 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 a new theme, which gets louder and stronger for special occasions.
    • The Daleks' Hebrew 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.
  • 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 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, Peter, as he loses control while trying to use Sylar's power. It's creepy and effective.
  • 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 Mad Artist Brian to go from mouse to man by playing the Thunderbirds theme.
  • Buffy the Vampire Slayer 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 The Wire 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 Sesame Street (He gets a version with Rock Guitar in Elmo Loves You)
  • Happens in the very first episode of Star Trek: The Next Generation, when the crew successfully pull off the first saucer separation while at Warp 9.5.
  • Oddly enough, even a network can be powered up through theme music. Remember "HBO in Space", the 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, YouTube commenter
  • This happens twice in a single episode of the reimagined Battlestar Galactica. In "Exodus Part 2", 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 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 Teen Wolf uses the season's opening credits theme in the climactic fight against Grandpa Argent.
  • Smallville brings the series to life for a last time, delivering 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.
  • The Incredible Hulk: Tense music when Dr. Banner is Hulking Out, and then when Hulk kicks ass.
  • Almost always the case in 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 MacGyver has come up with an innovative solution to the problem of the week when the music starts playing.
  • Happens in the penultimate episode of Breaking Bad, and the "power-up" lasts Walt until the very end of the finale.

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    Video Games 
  • Space Ace, when Dexter turns into Space Ace. And it is AWESOME.
  • Vanguard used "Vultan's Theme" when powering up. No one legally threatened Centuri apparently, since they also shamelessly used the main theme of Star Trek: The Motion Picture (later of Star Trek: The Next Generation) as the opening theme.
  • Played with in Lollipop Chainsaw. 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.
  • Call of Duty: Modern Warfare 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 Soul Calibur 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.
  • All of the companion missions in Mass Effect 2 use that companion's theme music, which steadily gets more awesome over the course of the mission.
  • Metroid:
    • Super Metroid's Final Battle, where the remixed Crateria theme starts thundering over Samus' Heroic Second Wind against Mother Brain.
    • Late in Metroid Zero Mission, 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, 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 up tempo version of the Brinstar theme song blaring all the while.
    • The final boss of Metroid Prime is accompanied by the already slightly creepy, Ominous Latin Chanting 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 Big Damn Villain moment too.
  • Metal Gear Solid 3: Snake Eater invokes the song Snake Eater if the player is running out of time in the final battle with The Boss.
    • Metal Gear Solid 4: Guns of the Patriots plays with this, where playing certain songs on the I Pod 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 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.
    • Metal Gear Rising: Revengeance 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, their attacks begin to change and the songs begin to add vocals.
  • Mega Man series examples:
    • Zero in the Mega Man X 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 Mega Man Zero 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 the Ragnarok satellite is plummeting toward the planet with Weil making a last bid by hooking up to the remains of its control system and directing it towards Area Zero. Then Zero has his "World of Cardboard" Speech and the absolutely awesome final boss music starts up.
    • And Mega Man Battle Network 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 Big Damn Heroes moments.
      • In what can only be described as Mood Whiplash, the 6th game has a slow, sad version of the theme, as 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 Mega Man NT Warrior 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 N-1 Grand Prix was, of course, between Netto and Rockman and Enzan and Blues. The fight takes place while the Anime Theme Song, "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 Single-Stroke Battle. 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 Mega Man ZX, 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.
The music gets even more epic when you enter into the second part of the battle; click here to see what I mean.
  • During the second fight with Dracula in Super Castlevania IV, 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 Castlevania: Aria of Sorrow. 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 inherit Dracula's powers once you defeat him. This allows you access to a previously sealed area of the castle... where you get to fight Julius Belmont himself! The battle is a tough one, too — especially because Julius has the best theme music in the game.
  • This is essentially the effect of Star Power in the Guitar Hero 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 Dawn Of War 2 switches on this when The Cavalry shows up and you get to go on the offensive.
  • Used throughout the 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 Halo 3: ODST, expect varients of the Menagerie or Orbital Drop Shock Trooper to kick in whenever something awesome happens. And of course, Halo: Reach continues the tradition with variants of Unreconcialed, Lone Wolf, or Noble Mission kicking in whenever Noble Team readies up for asskicking.
  • Each area in Phantasy Star Online 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.
  • Sonic the Hedgehog has been doing this lately. When someone goes Super at the end of each game, it is always accompanied with a Theme Music Power-Up.
    • 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, Sonic Adventure 2. 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—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.
    • Sonic Generations 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 Time Eater boss fight, using the Super Sonic theme from Sonic the Hedgehog 4 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 Sonic Colors, 'Reach for the Stars' kicks in (for about ten seconds before you beat the boss, unfortunately) when you activate the 'Final Color Breaker'.
  • The Final Fantasy series has a ton of examples of this; practically one per game.
    • In Final Fantasy IV, when Big Bad Zeromus has all but obliterated the party, the Elder of Mysidia clears his throat, asks all the former party members for help, and "Final Fantasy", the theme song for the entire series (also known as "Prologue") plays. Cue the Combined Energy Attack that revives the party to full fighting strength.
    • Musical motifs from Exdeath's already evil and imposing theme in Final Fantasy V are used in his even more awesome personal battle theme.
      • Also, 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 Gilgamesh's theme song, "Battle at the Big Bridge", and sure enough he shows up to save the day.
    • Locke's Theme is the standard Theme Music Power-Up in Final Fantasy VI.
    • Inverted in Final Fantasy VII: A Flash Back to the Big Bad'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 Ominous Latin Chanting 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 Crisis Core, 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 no longer playing around.
    • The last true boss of Final Fantasy X is heralded by a massively muscled arm clawing up to a platform — and much more importantly, metal guitar.
    • Final Fantasy XIII has one for the battle theme; a lively D&B arrangement.
  • When the main plot of Chrono Trigger starts up, they even let you bask in the theme music during enemy encounters.
    • Also, characters' personal themes. 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 Bonus Boss, his mother, he personally taunts his enemy and replaces the normal boss song with his own.
    • When Dalton commandeers the 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...! Stop the music!") and replaces it with a more villainous tune. ("Ha! There we go!")
  • Gig, Omnicidal Maniac hero of Soul Nomad & the World Eaters, has three theme songs. Consequently, he has three different stages of Theme Music Power-Up depending on which one's used, ranging from "you'll receive a verbal smackdown" to "you're Deader than Dead, and so's your Throw-Away Country And Your Little Dog Too".
  • In the 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 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.
    • The Legend of Zelda: The Wind Waker is like this too.
    • In the beginning of The Legend of Zelda: Link's Awakening, 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.
  • Star Fox 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!
  • Super Robot Wars 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-Badass Normal characters in the Original Generation 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 Bad Ass, 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 Bad Ass 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 Wave Motion Gun of the show by the end.
    • The spin-off game Endless Frontier 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 Minmay and Basara (in the story, at least) actually saves the day in the final stage, by galvanizing the heroes against a wave of malice that comes from the series' ultimate Big Bad. It's no coincidence that the song was created in Real Life by JAM Project 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. "Satellite Cannon", "Riders In the Skies" and "Dark History" were not programmed to have a lower priority than boss songs.
    • Ruri invokes this by playing the Gekiganger3 theme during a key battle in Super Robot Wars W, giving everyone the extra dose of Hot-Blooded they need to save the day. Sousuke and Heero try to resist this, as they must be stoic.
    • Sheryl, in Scenario 18-A of Super Robot Wars Z2: 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, Battle Moon Wars 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 Fate/stay night characters, but when using Nine Lives Blade Works, it changes into a remix of Emiya.
  • Speaking of song overridings, Dynasty Warriors have Lu Bu, which Elzam seems to be an Expy of. And finally, in Samurai Warriors, 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 best scene in Super Smash Bros.. Brawl's Subspace Emissary, after Ganondorf and Bowser's gigantic Subspace Battleship shoots down the heroes' recovered Halberd, the heroes escape in their personal fighters to the Theme Music Power-Up. The music being Dramatic Latin Chanting doesn't hurt.
  • Boss battles in Skies of Arcadia 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 Persona 3 is accompanied by a remix of Burn My Dread, the game's theme tune. It's appropriate for this trope because as the battle progresses, the Main Character 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 rock you in the face or 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. And once you've played that scene, you'll never be able to hear it without hearing Shinji helping you out.
    • The boss battle against The Dragon, and true (non-scripted) Final Battle, is fought at the sound of "Battle Hymn of the Soul" —a glorious power-rock remix of the Leit Motif for the entire 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 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 Live A Live, 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.
  • Sa Ga Frontier had Alkaiser's theme, which plays Once Red receives his upgrade to superhero status, when you fight Shuzer the 2nd time and when you fight Arachne (Cindy Campbell)
  • 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 Thunder Force V, as you fly into space you encounter a replica of the ship you flew in Thunder Force IV as a boss, accompanied by an (even more) awesome remix of the heavy metal theme tune of Thunder Force IV (although this could be considered an inversion, considering its a Theme Music Power-Up for your foe).
    • This happens yet again during the boss battle with Orn's very own version of Vasteel in Thunder Force VI, but not only do you fight Rynex, but you also fight Styx and Gauntlet as well!
  • Captain America and the Avengers would play a cool Super-Hero type music when the level's boss was down below 30% health.
  • Played for laughs in Monkey Island 2: LeChuck's Revenge, when Guybrush swinging heroically to grab a chest prompts the Indiana Jones 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 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 "Emiya" kicks in. Unlimited Blade Works ownage follows.
    • This happens in the original Visual Novel as well. As soon as 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.
  • Fate/Extra does this for all three playable servants, whenever a character uses their Noble Phantasm the scenery changes and their personal leitmotif plays for the duration.
  • It's difficult to say whether Kratos' theme music in God of War is this or a particularly bloody version of Mickey Mousing. 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 Space Invaders Extreme, picking up a powerup 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 Fever Time.
  • The final boss battle of La-Mulana 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 Cave Story the battle with 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.
  • The Final Battle of Ōkami. The protagonist: Amaterasu, Sun Goddess. The enemy: Yami, Lord of Eternal Darkness. The name of the song: "The Sun Rises." Yeah, the Final Boss doesn't stand a chance.
  • In the game God Hand, 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 Shadow Hearts: Covenant plays this semi-straight several times throughout the game, and parodies it in one scene. 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 Space Channel 5 games also feature this trope. In the first one at the end, when Ulala is fighting 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 Big Bad.
    • Similarly, the final battle of the second game, Space Channel 5, Part 2 features Ulala fighting against the new Big Bad 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 Sid Meier’s Alpha Centauri, and every time your troops are fighting you'll hear an absolutely badass heavy metal theme.
  • Rise of Nations replaces the usual ethnic rhythms with military fanfares every time your troops are kicking some enemy ass.
  • As well as Command & Conquer: Generals.
    • While you can choose the music playing in the earlier Command & Conquer, in Tiberian Sun: Firestorm, when Cabal activated his last line of defense, a huge and powerful Humongous Mecha, 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 Command & Conquer: Red Alert 3, 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).
  • 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. See how it works here, though the lyrics are NSFW.
  • Wangan Midnight Maximum Tune marks the introduction of a major character into an arc-ending race with his or her Leitmotif.
    • 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 Yunalesca finally begins.
  • In Shadow of the Colossus, 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. And when you realize you're pulling a Nice Job Breaking It, Hero, the music turns bitterly ironic.
  • In Elite Beat Agents, the agents fight off against music-hating aliens by getting everybody in the world to dance to an 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 Ace Combat 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 that final boss music.
    • For those of you who haven't played the game: it's a mix of flamenco music, One-Woman Wail, Ominous Latin Chanting, and pure awesome.
    • Ace Combat 5 has "The Unsung War", which combines your theme song with Ominous Latin Chanting 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 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 full blown Magic Knights.
  • The original Star Soldier Shoot 'em Up 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.
  • Persona 4 has music for the Final Boss that 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 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; Wild ARMs 2 and Wild ARMs 4 in particular use The Power of Friendship and a Combined Energy Attack completely shamelessly in the course of the fight, which when combined with the incredible songs makes for moments of total awesome.
  • The World Ends with You: You're about to face down the final boss alone, leaving you practically powerless. Suddenly, your friends decide to stop being unconscious and help out. Cue the Surreal Theme Tune.
  • In the console version of BlazBlue, if a player performs Bang Shishigami's Furinkazan super move, the music suddenly changes to a brand-new song by Hironobu Kageyama called "Omae no Tetsui ni Kugi wo Ute". It's an over-the-top song about how much of a Hot-Blooded Badass Bang is. And it is awesome.
    • BANG BANG BANG 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.
    • And in the console version of the sequel, Continuum Shift, when you perform an Astral Heat), the chorus of the opening song plays in the background.
  • Disgaea is fond of this. An interesting point is Kurtis' awesome return, which makes the 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 The earth SDF does when their theme music is first played.
  • Tales of the Abyss has this used against the party in the optional Arena battle with four previous Tales characters; at first, the game is playing "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 "Eternal Mind" suddenly starts up. This is about when any average player goes "Oh Crap."
    Reid: "We will not LOSE!!"
  • A traditional example shows up in the final battle of Tales of Xillia 2 when Ludger 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 Baten Kaitos Origins, the True Final Boss knocks the Power Trio on its ass a few minutes into the fight, but then Malpercio gives Sagi a Rousing Speech, '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, 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: Raidou Kuzunoha vs. King Abaddon, 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 much to any Survivor's dismay by the Tank's theme in Left 4 Dead and Left 4 Dead 2.
  • Tales of Symphonia: 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 Double Dragon 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.
  • One of the best things about Half-Life 2 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 Valve theme itself plays when you finally regain the HEV suit in Half-Life 2.
  • Bayonetta has "Fly Me to the Moon".
  • Whenever a character enters Border of Death mode in Touhou Soccer 2, the character's accompanying theme takes over as the BGM briefly (assuming that a theme exists).
    • Gengetsu, the Bonus Boss of 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 intense.
    • An Easter Egg in 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 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 Reimu, Byakuren and Miko, which is set to her own theme music.
  • Used as a game mechanic in Beat Hazard, 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 Pitfall II: The Lost Caverns every time you grab a treasure or rescue someone a galvanizing, heroic, upbeat theme vaguely reminiscent of the Indiana Jones 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 Threads of Fate. Expect something awesome will happen
  • In Bomberman Generation, the boss battles start off with a slower, more foreboding version of the game's Theme Song. However, when the titular hero brings a boss's health down to critical levels, the music changes to the main theme.
  • In Pokémon Black and White, when you've got the Gym Leader down to their last Pokémon this music cues up.
  • 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 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 Secret of Mana.
  • In Dragon Ball Z: Raging Blast 2, when you activate Raging Soul, the battle music turns from normal to the theme song sung by Hironobu Kageyama.
  • The Medal of Honor series and it's cousin the Call of Duty series will usually have the most dramatic music possible occur as you charge headlong into battle.
  • The N64 / PlayStation Mission: Impossible game powers up the MI theme during the Embassy Escape, Tunnel, and Gunboat levels.
  • The true final stage of Raiden IV uses a remix of Raiden II's first stage theme, and the True Final Boss's theme is a metal remix of the Raiden 1 boss theme.
  • The River of Souls stage in Turok 2 uses an extended remix of the game's title theme. In the sound test, there's another unused remix that was apparently intended for the Final Boss battle.
  • The final battle music in the original Syphon Filter is an epic, albeit dark, remix of the series' main theme. Even more prominent in Omega Strain, eg Carthage Mall, and Belaya Vezha, both of which also feature Cherubic Choir / Ominous Latin Chanting.
  • Twisted Metal 3 reprises "Meet The Creeper" for the final stage.
  • The theme song to the show-within-a-game 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 Rubberband AI sweeter.
  • The True Final Boss of Blaster Master reuses the epic Stage 7 theme.
  • Saints Row: The Third has three Theme Music Power-Up moments. "Power" by Kanye West plays when you 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, you get You're The Best Around. Finally, 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, this plays. There are no words.
  • Saints Row IV cues "You've Got the Touch" when the Boss dons Power Armor before the final boss, letting him use all his simulation superpowers in the real world
  • Child of Eden fully powers up "Heavenly Star", the Genki Rockets' Signature Song, at the end of the final battle, after two remixes of it in the preceding Boss Rush and Sequential Boss battle.
  • In Sengoku Basara 3 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 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 The Elder Scrolls V: Skyrim, "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 P.N.03 uses the full version of the attract/intro music.
  • In Win Back, the final boss battle with Cecile reuses the opening theme.
  • Asura's Wrath, in both a Moment Of Awesome and a Heartwarming Moment, has Surge of Mantra, which is played upon Asura getting his ultimate form through the power of prayer and to beat down the will oof the planet's ass flat.
  • In Bleach: The 3rd Phantom, whenever a character activates their Bankai 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 Bankai.
  • In Kirbys Return To Dreamland:
  • The Chapter 1 theme in House of the Dead is remixed for the Final Boss battle with the Magician. In turn, this version is reused for the rematch with the Magician in the second game.
  • In Razing Storm, during the final battle with Paulo Guerra in the PS3 sequel, the Five Finger Death Punch song Ashes plays.
  • The climax of the Galaxy Angel games always follows the Theme Song variant, playing that year's version of Eternal Love (or, in Galaxy Angel II games, Wing of Destiny).
  • During the boss battle against Vic Viper in Zone of the Enders: The 2nd Runner, a 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 Paper Mario: Sticker Star, both times when an otherwise Nigh Invulnerable boss is opened up to your attacks. First, when you use a sponge to send the musically-inclined Gooper Blooper's poison back at him, the music switches to a remix of the original Super Mario Bros. theme. Then, much later, after Kersti sacrifices herself to give Mario the power to defeat Bowser, a triumphant version of the series' invincibility theme mixed with Kersti's Leitmotif starts up.
  • The Final Dungeon of Fallout: New Vegas uses an Orchestral Bombing 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 Final Boss.
    • 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.
  • The Legend of Zelda: A Link to the Past: After all the pendant hunting, you reach the forest to pull The Master Sword from its resting place. Cue the powerful "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. Since both of them are Overlords it's quite fitting
  • In Star Wars: The Old Republic, 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 Crowning Music of Awesome.
  • 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... and then the game's theme music softly starts up and Cyrus turns around for one hell of a Rousing Speech.
  • In Banjo-Kazooie and its sequel, activating Wonderwing plays the Banjo-Kazooie title theme. Though not as dramatically, so does donning a pair of the special shoes.
  • Bravely Default has music that starts playing when you activate a special move. Each character has a 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 Magic Music, this is common in Ar tonelico. Most notably with METHOD_REPLIKA, which plays when supercharging an attack spell.
  • The Smurfs 2, the videogame adaptation of the movie, has The Smurfs theme tune play whenever the True Blue Spell is activated.
  • The final stage of Far Cry 3: Blood Dragon is set to the game's main theme.

    Visual Novels 
  • Shinkyoku Soukai Polyphonica features many in-universe examples of this, since the series is based on Magic Music, which really does power the spirits up.
  • Maji De Watashi Ni Koi Shinasai:
    • Men are about courage, bgm that was played each time Yamato or any other male character get their Moment Of Awesome.
    • 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 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 Emiya or Sword of Promised Victory starts playing in Fate/Stay Night you know that Shirou and/or Saber are about to open a whole case of ass-kicking.
  • Princess Waltz has Battlefield of Steel to tell you when something awesome is about to happen. Perhaps the single most awesome moment being when the Shrinking Violet Riko transforms into the strong, fast, and calculating Liesel right before Arata's eyes just when it looked like they were cornered by the token monsters.
  • Ace Attorney 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 Double Subversion 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 "Investigation ~ Cornered (Variation)" (very dramatic and heroic music) starts up as Edgeworth objects to keep the witness on the stand. The music dies as 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 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 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: Edgeworth returns from a Journey to Find Oneself. 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 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, the cross-examination theme will always 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.
    • 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 Marvel vs. Capcom 3. While his normal theme song is the first game's "Objection!", whenever he gathers enough evidence to go into 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 Big Damn Heroes theme song for the next two games? It's received a remix on his own game, Ace Attorney Investigations, to be his Objection! theme. And on the second one, it's basically the ground stone for every theme involving him.

    Web Comics 
  • The Adventures of Dr. McNinja has to sing along to the 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.
  • When Aerith and Zexion played One-Winged Angel in the murder-off in Ansem Retort, it was intended to stop Cloud. They didn't figure out until too late that it was also Axel's Theme Music Power-Up.
    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, 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 Loading Screen when John installed Sburb. However, it gets remixed for both the End of Act 3 and Act 4 animations to signify that some seriously awesome shit is going down.
  • A very literal variant in Girl Genius; 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.

    Web Original 
  • Atop the Fourth Wall: Although not his own theme song, [[Linkara]] makes use of the Power Rangers theme song when, after being beaten to a pulp by his cyborg counterpart Mechakara, he gets an Heroic Second Wind and morphs into "Internet Reviewer," after which he proceeds to kick Mechakara's ass.
  • Red vs. Blue: 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 the army of Tex clones in Season 10, using the classic theme song.
  • In Death Battle, The music usually shifts to a song from the character's soundtracks when they get the upper hand.
    • 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.
  • Welcome to Night Vale's theme plays when Cecil takes back the studio in episode 48.

    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.
  • The Real Ghostbusters. 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 Crazy Enough to Work) to defeat the episode's Big Bad, and then afterwards during the Final Battle with the Big Bad itself; which often also involved Egon coming up with a brilliant Indy Ploy 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 The 13 Ghosts of Scooby-Doo, where the Popeye theme plays as Scooby downs a box of Scooby Snacks.
  • The heroes of most shows in the animated DCU.
    • In one episode of Justice League Unlimited, Green Arrow even sang along to his theme as he kicked butt.
    • In the Justice League episode "Hereafter", Batman fights Kalibak while a fairly quiet orchestral version of the 1966 TV theme song plays in the background.
    • The Joker in Batman: The Animated Series would hum his own theme music on occasion.
    • Batman Beyond:
      • 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 South Park episode "Towelie", as whenever the titular Towelie got high, Popeye's theme music played and Towelie became dumber than he already was.
  • Most of Kim Possible'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 this clip.
  • The Futurama OVA "Bender's Big Score" has the climactic battle with the theme playing the background.
  • The fifth season finale of Teen Titans (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 Avatar: The Last Airbender , as Aang hands Azula one of her few outright defeats in the series.
    • Not to mention during the 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 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 Pac-Man and the Ghostly Adventures, 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.
  • Transformers: The Movie has "The Touch" by Stan Bush, most memorably played during a Foe-Tossing Charge 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 killed Prowl, Brawn, Ratchet, and Ironhide in about ten seconds. One can probably make an argument for "Dare to Be Stupid" for the Junkions.
  • 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 Leitmotifs 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 Thundertank.
  • In the first episode and first two season finales of 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.
  • He-Man and the Masters of the Universe (1983): He-Man's 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. He Has the Power!
  • In Code Lyoko, William gains a personal music theme in Season 4 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.
  • Inspector Gadget 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 Captain Planet 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 Ninja Turtles toon, the turtles discover that the Foot Ninja they're fighting are actually robots, and the theme music starts up as they proceed to go to town on them.
  • The Eighties loved this one. On Galaxy Rangers, once you heard the electric guitar music, you knew something awesome was coming in.
  • On Lilo & Stitch: The Series, 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 The Super Mario Bros. Super Show, the transformation was accompanied by the "level clear" fanfare from Super Mario Bros. 2.
  • In The Big Knights, whenever Sir Morris and Sir Boris are about to perform their idea of heroics (which usually means smashing everything), the show's thunderous orchestral theme music kicks in.
  • The season one finale of Generator Rex uses the theme tune when 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 He's Back in 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 was sung by the villain.
  • Thomas And Friends 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).
  • The Dreamstone 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 they sabotage dreams and later scare off the heroes).
  • In the My Little Pony: Friendship Is Magic episode Twilight's Kingdom Part 2, the Mane Six transforming into their Rainbow Power forms is accompanied by an orchestral remix of the theme song.

Theme Music AbandonmentScore and Music TropesTheme Music Withholding
A Storm Is ComingHarbinger of AsskickingThrowing Down the Gauntlet
Teased with AwesomePowerThese Look Like Jobs For The Supermen
Stuff Blowing UpRule of CoolThere Is No Kill Like Overkill
Technology PornTokusatsu TropesTitle Theme Tune
Soundtrack DissonanceMusic TropesA Cappella

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