[[quoteright:320: [[Series/BuffyTheVampireSlayer http://static.tvtropes.org/pmwiki/pub/images/btvs-once-more-with-feeling_2898.jpg]]]]

->'''Phineas:''' So what do you say? We'll do all the same things, but we'll break into spontaneous singing and choreography with no discernible music source!\\
'''Ferb:''' Hmmm.... What assurance would we have that everyone else would also break into song and do the same thing?\\
'''Phineas:''' I don't know. I think they probably will.\\
'''Ferb:''' Fair enough. I'm in.
-->-- ''WesternAnimation/PhineasAndFerb'', "Rollercoaster: The Musical!"

Once in a while, a show will shake things up and do SomethingCompletelyDifferent. One way of doing that is by turning the show into TheMusical for an episode.

A Musical Episode is structured around the cast breaking into song (and possibly dance) throughout the episode. It might use an in-universe [[JustifiedTrope justification]], such as a BattleOfTheBands, some sort of [[AppliedPhlebotinum weirdness]], or a new [[TheMusicMeister character causing]] [[Series/BuffyTheVampireSlayer all this cheery singing]]. Alternately, it can play like a Broadway show where it's just taken for granted that some events will be dramatized through song and dance.

Opinions on a Musical Episode can differ wildly. Many will enjoy the up-beat, unexpected change of pace, while many will dislike it for that very reason. Also, like any premise, the songs and choreography have to be good, or else you're doomed from the start. But if they are good, such episodes tend to be very memorable because [[EarWorm songs tend to stick in people's heads]].


* ''Manga/BoboboboBobobo'''s 48th episode had them defeat a foe by singing him into submission. Even by [[WidgetSeries Bo-BoBo's standards]], it's amazingly crazy.
* The [[GagDub English dub]] of ''Anime/DuelMasters'' randomly has Shobu and Kokujo be forced to come up with an inspirational song before they can duel.
* ''Anime/JewelpetSunshine'' had the characters performing ''Theatre/WestSideStory'' in one episode.
* ''Manga/{{Kanamemo}}'''s fourth episode would be an amusing little story about the Fuhshin News employees attempting to get to the pool on its own, but the anime takes it a step further and adds song and dance numbers to the mix. No explanation is given for the singing.
** If it helps, Kana is as confused as the rest of us.
* One episode of ''LightNovel/KureNai'' depicts the characters' attempts to rehearse a musical for a local festival, which eventually leads them to come up with their own material from scratch. It turns out that [[spoiler:it is a ploy by Benika to keep Murasaki entertained - which by and far succeeds]].
* While ''Franchise/LoveLive'', being an IdolSinger show, naturally features a musical number OnceAnEpisode, TheMovie goes into full Broadway musical mode.
* ''Anime/NadiaTheSecretOfBlueWater'' had a [[ImageSong Character Song]] episode at the end of its infamous [[{{Filler}} Island/Africa]] arc.
* ''Manga/OnePiece'': The TV Special Dance Carnival could be considered a dance episode (Dance special?). It starts on the aptly called Mirrorball Island. While trying to escape the Marines, Jango hypnotizes everyone to dance 'till they drop. Including the Straw Hats. HilarityEnsues.
* ''Anime/{{Pokemon}}'':
** Though not really an episode of the show nor even canonical to it, the stage show ''Pokémon Live!'' would seem to fit in this trope.
** "Gotta Dance!", the short before the sixth movie.
* Episode 17 of ''Anime/SpaceDandy''. Baberly Hills High School ranks students based on musical ability, so naturally this resulted.
-->'''Meow:''' The [[Series/{{Glee}} glee]] [Dandy] must be feeling right now...
* ''Anime/ValvraveTheLiberator'' delivered a rather cheesy musical moment in the end of episode 5, in hopes to get more supporters from both factions.

[[folder:Comic Strips]]
* ''ComicStrip/{{Nodwick}}'' had one of these, courtesy of Arthax and a "Scroll of Thespia".
* The ''Magazine/DoctorWhoMagazine'' strip "Planet Bollywood" has the [[Series/DoctorWho Eleventh Doctor]] and Amy land on a planet where everyone breaks into song and dance routines.
* The ninth issue of ''ComicBook/TomorrowStories'' featured a ''Greyshirt'' musical, as in a literal stage production; ''Greyshirt: Indigo Sunset'' later established that the man himself took the title role at one showing. Critics are astounded at Greyshirt's singing and dancing, claiming that he could've been another Creator/GeneKelly.
* The story ''Deadbeats!'' from ''[[ComicBook/HackSlash Hack/Slash Trailers: Part 2]]''. It involves zombies invading Broadway.
* In ''ComicBook/TwoThousandAD'', ''Robo-Hunter'' appeared in a story called "Play It Again, Sam." Set during National Song Year, it saw characters in the strip regularly break in to song-and-dance routines as Sam Slade set about defeating the anti-robot Human League.

[[folder:Fan Works]]
* Several of the ''FanFic/CalvinAtCamp'' episodes, notably the movie parodies, are musicals.
* The 6th ''WebAnimation/TouhouM1GrandPrix'' had a [[RuleofFunny constantly interrupted]] duet as part of a BokeAndTsukkomiRoutine.
* ''Fanfic/TotalDramaEquestria'' is a musical, be they songs from My Little Pony: Friendship is Magic or parodied songs from other sources.
* One chapter of ''FanFic/TheStoryToEndAllStories'' includes a song called [[spoiler:We're Going Out in Style]].

[[folder:Films -- Animation]]
* The first ''WesternAnimation/MyLittlePonyEquestriaGirls'' film had an epic performance number in the form of the "Cafeteria Song"(AKA "Helping Twilight Win the Crown"), but little else in the way of character-performed songs. [[WesternAnimation/MyLittlePonyEquestriaGirlsRainbowRocks The sequel]], however, went full-on musical with its BattleOfTheBands plot.

[[folder:Films -- Live-Action]]
* ''Film/SlumberPartyMassacreII'', where the main characters are an all-girl rock group and the main villain is a spectral rockstar whose main weapon is an electric guitar outfitted with a drill. [[BizarroEpisode It's a very weird and random sequel]].

* ''Spellsinger'', the fifth book of ''Literature/AvalonWebOfMagic''. A benefit concert and singing contest insert about three songs into the book...through just printing the lyrics in the text. Some of the songs were {{Defictionalized}} and released on CD to promote the book.
* ''Literature/HowMuchForJustThePlanet'' by Creator/JohnMFord is a Franchise/StarTrekExpandedUniverse novel in the form of a Musical Episode. All (almost all) of the songs are {{pastiche}}s of pre-existing songs so they'll be recognizable in text. Unfortunately this also means that filming it would probably be a massive copyright violation.
* Of ''Literature/TheFourGospels'', Luke is the one that has people bursting into song.
* ''Literature/AStormOfSwords'' features several songs written in-page, as part of ''Literature/ASongOfIceAndFire''. "The Rains of Castamere" has gone on to be a BreakawayPopHit from page to life, and plays a key role in the books as {{Leitmotif}}.
* ''Sex and Drugs and Sausage Rolls'', the sixth book in the Brentford Trilogy by Creator/RobertRankin is about Poole and Omalley putting on a musical adaptation of ''Armageddon: The Musical'', also by Rankin. Several songs based on the earlier book are included in the text.

[[folder:Live-Action TV]]
* ''Series/AllyMcBeal'' had one at the end of season 3. Randy Newman wrote part of the music for this.
* "[[Recap/BuffyTheVampireSlayerS6E7OnceMoreWithFeeling Once More, With Feeling]]" from the sixth season of ''Series/BuffyTheVampireSlayer''. The episode bizarrely sends up the musical genre (and its respective subgenres) as a whole, musical and dance genres from rock to ballet, and (in typical Creator/JossWhedon fashion) the series itself with wicked glee, yet also manages to fit plot and CharacterDevelopment in as well ''and'' come up with a plausible (for ''Buffy'') explanation for why everyone's singing.
** [[http://www.youtube.com/watch?v=d_fcXR6t14k&feature=related THEY GOT THE MUSTARD OUT!]]
** It was so well-known it made it into Creator/Channel4's top 100 musicals at number 13, above such notables as ''Theatre/LesMiserables'' and ''ThePhantomOfTheOpera''...
* ''Series/ChicagoHope'' had the fourth-season episode "Brain Salad Surgery". Dr. Aaron Shutt suffered a brain aneurysm that caused him to hallucinate the rest of the hospital staff singing and dancing.
* ''Series/ColdCase'' had "Creatures Of The Night" (a murder during a screening of ''Film/TheRockyHorrorPictureShow''), "Triple Threat" (about a young Russian ballerina who defected and became a pop singer) and "Wilkommen" (about a guy who got cast on a production of ''Theatre/{{Cabaret}}).
* The second season of ''Series/{{Community}}'' had [[Recap/CommunityS2E11AbedsUncontrollableChristmas "Abed's Uncontrollable Christmas"]] which, since it was also their homage to the Rankin Bass stop motion Christmas specials, had several short songs, and the third season ChristmasEpisode [[Recap/CommunityS3E10RegionalHolidayMusic "Regional Holiday Music"]] was a blatant ''Series/{{Glee}}'' parody.
* ''Series/EvenStevens'' did an episode titled "Influenza: The Musical" in which Ren has a [[FeverDreamEpisode fever induced dream]] in which the whole school would randomly burst into song, and Ren herself had to sing a song in the climax.
--> "We went to the moon in 1969..."
--> "I've got chicken soup, delicious chicken soup soup ..." *cue Ren screaming in terror*
* ''Series/{{The Flash|2014}}'' had a musical crossover with ''Series/{{Supergirl|2015}}'', featuring many actors from the Series/{{Arrowverse}} who have had experience in the music business, especially the two shows' respective leads, who were both on ''Series/{{Glee}}''. And the villain? Who other than the [[WesternAnimation/BatmanTheBraveAndTheBold Music Meister]], played by fellow ''Glee'' alum Darren Criss!
* On the heels of the success of ''Series/{{Glee}}'', FOX had a musical week including ''{{Series/Fringe}}''. Which turned out to be a NoirEpisode as well-- a ''double'' case of SomethingCompletelyDifferent. And it was justified in that the noir musical was simply the fictional story within a FramingDevice.
* ''Series/GoodTimes'' had two. One doubled as a ChristmasEpisode while the plot of the other was a talent show to raise money for a daycare center in their building.
* ''Series/GreysAnatomy'' had one. Similarly to the ''Series/{{Scrubs}}'' example, it was from the point of view of a patient; though the patient was one of the doctors in the main cast. She is played by Creator/SaraRamirez, an actress/singer who was in Monty Python's ''Theatre/{{Spamalot}}''.
* The episode "Bedtime Stories" of ''Series/HowIMetYourMother'' is a spoken-word equivalent of this in which Marshall attempts to calm down Marvin on a crowded bus by telling him bedtime stories; the trope applies because the entire episode is spoken in rhyme (as are the stories). Creator/LinManuelMiranda guest stars as Gus, the guy sitting on the bus next to Marshall and Marvin, and supplies an entire free-style rap verse when Marshall is unable to rhyme the word "Canada" (Gus eventually uses the slant ryhme "janitor").
** Then there's the episode "Girls vs. Suits", which ends with an extravagant musical number in which Barney declares his love for suits.
* ''Series/ItsAlwaysSunnyInPhiladelphia'':
** The fourth season had its musical episode where Charlie actually wrote and then directed a musical, not that his friends would let it be that simple.
** Season 12 has "The Gang Turns Black" where the gang are watching ''Theatre/TheWiz'' on tv during a thunderstorm, and a jolt of lightning causes them to not only appear black to everyone else, but also be trapped in a musical as well. [[spoiler:It turns out to [[AllJustADream be a dream]] that their neighbor, Old Black Man, is having about them.]]
* The ''Series/KamenRiderFaiz'' Hyper Battle Video, where the characters suddenly break out into song and dance for no apparent reason as part of Smart Brain's latest plot. They {{lampshade|Hanging}} the fact that they're singing, and in the end Takumi ends up defeating the Orphenocs with a sonic blast from a radio which was causing the whole thing. [[ItWasAllJustADream And then Takumi wakes up]].
* ''Series/{{Lexx}}'' had its musical episode in "Brigadoom". In it, the crew of Lexx encounters a mysterious theater floating in space and ends up performing Kai's backstory on stage. Of particular interest is the use of theater-grade special effects, so that a fleet of spaceships is represented by people waving miniatures on poles instead of the show's usual computer-generated effects.
** Actually, as the behind-the-scenes DVD material shows, some of the show's VFX were produced cheaply by manipulating miniatures on poles in front of a green screen, so the play version might be more of a self-referential parody.
* The "Land of the Luvvies" episode in ''Series/TheLegendOfDickAndDom'' features a much-feared tribe of {{Luvvies}} who [[TheMusicMeister spread song and dance]] through the neighbourhood.
* ''Series/LittleHowardsBigQuestion'' has an episode called "Can We Sing For A Whole Episode?".
* ''Series/MalcolmInTheMiddle'' had an episode in which Dewey turns his parents' fight into an ''opera''. The episode is appropriately entitled "Dewey's Opera".
* Once in a while, in TheSeventies, ''Series/MisterRogersNeighborhood'' would invite an opera singer friend of Mr. Rogers named John Reardon, and the episode, entirely set in the Land of Make-Believe and featuring a lofty plot line, would resemble a musical or light opera, with all of the characters singing their lines.
** One particularly epic example tells the story of the Wicked Knife and Fork (a man with a [[ExactlyWhatItSaysOnTheTin giant knife and fork on his tunic]]) kidnapping Purple Twirling Kitty atop Spoon Mountain, prompting Prince Extraordinary (son of King Kittypuss and Queen Mumsiebelle) and Park Services Director [[AerithAndBob Betty Green]] to mount a rescue mission. [[MundaneMadeAwesome It's far more awesome than you'd you think]], and even manages to be {{Troperiffic}}, working in FreudianExcuse, DesperatelySeekingAPurposeInLife, BiggerOnTheInside, LoveRedeems, AnAesop about [[SomeAnvilsNeedToBeDropped helping all those in need regardless of their status]], and even GondorCallsForAid and BigDamnHeroes, all in about eighteen minutes.
* ''Series/OddSquad'': In "The Cherry-on-Top-inator", Oona is pleased when Olympia and Otis start telling their story about the eponymous device, as she thinks it is going to be a normal story. Instead, it turns out to be a musical about them going undercover in a diner to spy on Puppy Master and Evil Knight.
* ''Series/{{One Day at a Time|1975}}'' occasionally did episodes where the cast would perform at a charity gig. The most memorable performance was probably Valerie Bertinelli as Music/EltonJohn and Mackenzie Phillips as Kiki Dee performing [[https://www.youtube.com/watch?v=TRAfBkqtGUQ "Don't Go Breaking My Heart."]]
* ''Series/OnceUponATime'' has "The Song In Your Heart", the last episode before the two-part Season 6 finale. The episode's flashbacks tell how Snow White and Prince Charming cast a spell that caused the whole Enchanted Forest to keep bursting into song, the joy of this giving them the strength to fight against the Evil Queen. [[spoiler: The climax reveals that the magic of that spell still lives in Emma's heart, giving her the power to fight back against the [[UltimateEvil Black Fairy]].]]
* ''Series/{{Oz}}'' has one of sorts. Series 5, episode 3 'Variety' has a central theme about variety shows and each of the narrator segments, usually occupied by Hill's musings about the theme is instead one of the characters singing in various different musical styles.
* ''Series/{{Psych}}'' "The Musical". ExactlyWhatItSaysOnTheTin. Somewhat justified in that the entire episode is a pitch Shawn is giving to a playwright for a musical, so everything's in his cloudcuckoolander head.
* ''Series/RaisingHope''. The episode about Burt turning out to be Jewish.
* ''Series/{{Sanctuary}}'' had a musical episode. Justified because the reason they were singing was to communicate with Will's girlfriend, who had been [[spoiler:infected with a musical parasite]].
** But that doesn't cover all the singing, such as Magnus' spoken word piece.
* ''Series/{{Scrubs}}'' did a musical episode ("My Musical") with the musicians of ''Theatre/AvenueQ'', on the premise that a patient had an aneurysm that was making her hear singing when people talked. All the musical sequences were from her point of view, and after she goes into surgery, the music stops.
** The patient in question is played by Stephanie D'Abruzzo, who was the original Kate Monster in said show.
* Many episodes of ''Series/SesameStreet'' featuring a number of original songs. One notable example is "Music Magic" from 2010, where the story is told mostly through song as a result of a magic spell gone wrong by Elmo.
* The final episode of season 1 of ''Series/ASeriesOfUnfortunateEvents'' ends with the Baudelaires, Lemony Snicket, Mr. Poe, and ''Count Olaf'' of all people singing a song about how you'd think that life would be good for the Baudelaires, but as the past season has shown, it is not. It's kind of a BigLippedAlligatorMoment.
* ''Series/SeventhHeaven'' had a Valentine's Day episode that was also a musical, called [[http://www.televisionwithoutpity.com/show/7th_heaven/red_socks.php Red Socks]].
* The ''Series/{{Supernatural}}'' episode "[[Recap/SupernaturalS10E05FanFiction Fan Fiction]]" is an episode ''about'' a musical -- specifically, a all-girl high school musical based on the ''Supernatural'' novels, an in-universe text written about the show's protagonists by an author who turned out to be the next prophet. The songs, sung by teenage girls playing the TV show characters in the musical, include Castiel's "I'll Just Wait Here", Dean's "Manly Tear", and a Broadway-esque rendition of "Carry On, Wayward Son".
* ''Series/SwitchedAtBirth'' had "Dance Me to the End of love". Which had several characters dancing in elaborate imagine spots.
* ''Series/That70sShow'''s 100th episode was a musical called, quite predictably, ''That '70s Musical'', only instead of singing songs written specially for the show, the characters sang some of the [[JukeboxMusical most famous seventies' songs]], as well as Music/TheTurtles' "Happy Together" from the sixties. [[spoiler: The singing scenes take place in Fez's imagination.]]
* ''Series/ThatsSoRaven'' did one in which Raven lets it slip that the new janitor is a talent scout is visiting her school, and thus everyone is breaking into song to impress the scout. [[spoiler:The kids eventually found out he was actually an undercover health inspector.]]
* ''Series/ToddAndTheBookOfPureEvil'' has a metal musical episode every season and straddles the line between playing it straight and justifying it. "The Phantom of Crowley High" had one inexplicable love song alongside an actual musical in the school. "2 Girls, 1 Tongue" justifies the singing as a side-effect of one of the Book's spells, but the cast does an unplanned number after the spell ends. Both feature a girl who hates musicals.
* The ''Series/TwoPintsOfLagerAndAPacketOfCrisps'' episode "When Janet Met Jonny".
* ''Series/XenaWarriorPrincess'' had two, actually. The funny one that parodied the "battle of the bands" type trope, and the (in some ways) more serious "Bitter Suite" episode.
* ''Series/XPlay'', a video game review show, did a ''surprisingly'' not horrible musical episode.
* Of course, some shows fall into this trope every week:
** Every episode of ''Series/CopRock''; justified what with it being, you know, a ''musical''.
** ''Series/EliStone'' has musical numbers in most of its episodes.
** Every episode of ''The Fresh Beat Band''. Justified because it is about a band.
** The entirety of ''Series/{{Galavant}}'', given that it was a musical TV show. While the first season had (primarily) original songs, the second season went full-blown parody, with homages to ''Theatre/LesMiserables'', ''Theatre/Grease'', ''Theatre/WestSideStory'', ''Theatre/AnythingGoes'', ''WesternAnimation/TheLittleMermaid'', ''WesternAnimation/Cinderella'', and ''Theatre/{{Hamilton}}''.
** Every episode of ''Series/{{Glee}}''. Justified because it IS show choir.
** ''Series/{{Smash}}''; see above, plus it's set in the world of musical theatre.
** Every episode of ''The Wiggles''. Justified because it's a kids' show starring a group of musicians.
** Every episode of Julie's Greenroom, but especially the final episode since the kids finally get to perform the musical they've been writing for the whole series.

* Episode three of the AudioPlay/BigFinishDoctorWho audio drama ''[[Recap/BigFinishDoctorWho043DoctorWhoAndThePirates Doctor Who and the Pirates]]''. As the story is being told through the framing device of the Sixth Doctor and Evelyn telling the story to one of Evelyn's students, it already contains a bit of storytelling silliness (Evelyn doesn't remember all the pirates' names, so she makes up obviously fake ones for the less-important characters), but when the Doctor takes his turn at telling the story, he decides, for LargeHam reasons, to deliver it in the form of a Gilbert and Sullivan musical. You could say that he's [[http://www.youtube.com/watch?v=hIdDXQ2h1Pc the very model of a Gallifreyan buccaneer]].
** As far as {{Cliff Hanger}}s go, this one is one of the most interesting:
---> '''Evelyn''': Oh no! You ''are'' going to sing!
---> '''The Doctor''': Well yes! I am! Llaaa-''[[[InterruptedByTheEnd cliffhanger theme music plays. Episode ends.]]]''
* Also in the Big Finish Universe, we have ''[[Recap/BigFinishDoctorWhoCCS7E9TheScorchies The Scorchies]]''. All together now- ''Jo is making a thing! It's got lights that flash and go bing! Oh, what a lovely thing to sing about, Jo, making a thing!''
* Season 6, episode 6 of ''Radio/JohnFinnemoresSouvenirProgramme'' has a musical Storyteller sketch about, and caused by, a cursed piano that [[TheMusicMeister makes people sing]].

[[folder:Video Games]]
* Every single Live Event in ''VideoGame/AdventureQuestWorlds'' has been a musical episode. Especially Friday the 13th, when Voltaire performs. Alternatively, a story is written based only on a certain singer's work.
* ''VideoGame/AssassinsCreedIVBlackFlag'' features sea shanties and tavern music all derived from actual period folk songs, much like Radio/GTARadio, you can command your crew to sing them while you sail.
* In ''VideoGame/ChibiRobo'', almost everything you do causes a seemingly-random string of notes to play in addition to the background music.
* The final boss of ''VideoGame/ChronoCross'', while [[QuieterThanSilence not having any music playing while you fight]], has you [[spoiler: casting spells in the correct order]]. If you speed footage of this battle up, [[spoiler: the notes each spell gives off, played in the correct order, [[FridgeBrilliance is the credits theme]]]].
* ''VideoGame/ConkersBadFurDay'' gives players a Musical ''BossFight''. "[[LargeHam Iiiiii, aaaaammmmmm, the Grrrreat Mighty Poo]] \ [[EarWorm ... and I'm going to thrrrrrrow my shit at you...]]"
* The entirety of ''VideoGame/EpicMickey 2'' is one of these.
* ''Franchise/KingdomHearts''
** ''VideoGame/KingdomHeartsII'' reworked [[Disney/TheLittleMermaid Atlantica]] into this. The UnexpectedGameplayChange caused something of a BrokenBase, but it did have a Musical Boss Fight against giant Ursula.
** In addition, the 3DS version, ''VideoGame/KingdomHeartsDreamDropDistance'' had an entire world, [[Disney/{{Fantasia}} Symphony of Sorcery]], composed entirely of sound. Even the usual Keyblade sounds from hitting enemies are turned into music notes, and special attacks are accomplished by finishing a 'score'. Oh, and the protagonists [[SilentProtagonist only talk in the cutscenes]]. Given how it is based on Fantasia, and features entire scores of some classical pieces, this fits perfectly.
* ''VideoGame/TheNightmareBeforeChristmasOogiesRevenge'' has you defeating bosses with a singing retort going between the characters the entire time.
* The main gimic of ''VideoGame/RhapsodyAMusicalAdventure'' is the musical interludes, featuring more than twenty numbers in key scenes and the occasional boss battle, both in English and Japanese.
* Venice in ''VideoGame/Sly3HonorAmongThieves'' could be considered this, due to Don Octavio's plot to pollute the city with tar unless everyone attends his opera during Carnival. Also, the final mission starts off as this, as the first part is Bentley performing a duet with Octavio.

[[folder:Web Comics]]
* ''Webcomic/PennyArcade'' did this at least [[http://www.penny-arcade.com/comic/2005/11/14/ once]].
* ''Webcomic/InstantClassic'', which has had [[http://www.instantclassic.net/story.php?comicID=100 background scoring]] in it before, composed and created an [[http://www.instantclassic.net/story.php?comicID=207 actual musical number]] to play along with the comic as it was read.
* ''Webcomic/BrawlInTheFamily'' did it a few times. The first was for Christmas 2008, a parody of [[WesternAnimation/HowTheGrinchStoleChristmas You're a Mean One, Mr. Grinch]]. The second was for Comic 200. The next three were for Christmas 2010, and the next one for Christmas 2012, along with Comics 400 and 600.
* ''Webcomic/{{Narbonic}}'' had a brief interlude in [[http://www.webcomicsnation.com/shaenongarrity/narbonic_plus/series.php?view=archive&chapter=40342&name=narbonic_plus one storyline]] to perform [[http://www.narbonic.com/MadbloodBattleAnthem.mp3 the Madblood Battle Anthem]].
* ''Webcomic/{{Nodwick}}'' has [[http://comic.nodwick.com/?comic=2011-02-28 Phantom of the Way, Way Off-Broadway Musical]] an issue here everyone ends up singing due to a scroll Artax casts without fully reading the effects.
* ''Webcomic/{{Fans}}'' did this -- complete with fully-voiced [=MP3s=] linked beneath the panels -- mostly as a homage to ''Series/BuffyTheVampireSlayer''. Again, there is CharacterDevelopment as the cast is forced to sing their hearts out; in contrast to the generally painful revelations in ''Buffy'', however, this mostly helps ''restore'' the characters' spirits, reminding them why they do what they do. The arc's title, "Makin' 'Em Sing", hints at the fact that the entire thing was orchestrated by people eager to learn what the cast have been hiding recently.
* In ''Webcomic/KillSixBillionDemons'', [[http://killsixbilliondemons.com/comic/wielder-of-names-2-26/ taking part in a devil drinking contest]] apparently forces you to ''sing'' all your dialogue.
* ''Webcomic/HolyBibble'' occasionally has a musical episode, usually parodying some sort of musical style that correlates to the current situation, such as a musical number when [[http://holy-bibble.com/comics/844 Yahweh descends from a heavenly stairway with backup angel singers]] to speak with Jacob.

[[folder:Web Original]]
* WebVideo/TheAngryVideoGameNerd's review of ''VideoGame/IkariWarriors'' on the NES became this with Kyle Justin's return as the theme song singer, singing about just how much the game sucked.
* ''WebVideo/TheBatterysDown'' is a musical webseries, which means every episode is a musical episode.
* ''The [[Music/DoctorSteel Dr. Steel]] Show'', Episode 3.
* ''WebAnimation/HomestarRunner'':
** The Strong Bad Email [[http://www.homestarrunner.com/sbemail125.html Rock Opera.]]
** Parodied in [[http://www.homestarrunner.com/sbemail139.html portrait.]] Strong Bad announces that this email will be a musical email, proceeds to start singing the email, then gives up after a few words.
* ''WebVideo/ImAMarvelAndImADC'' did this in honor of their hundredth video. [[http://www.youtube.com/watch?v=IyPh8aIdR-4 CONTINUITY!]]
** [[http://www.homestarrunner.com/onetwo.html This little number.]]
* ''WebVideo/LastExileAbridged'' gives us [[http://www.youtube.com/watch?v=W2LCdDAaldg this beauty,]] which is not terribly surprising given that Unwardil is a musician. She Who Must Be Obeyed later makes him summarize the episodes properly.
* ''WebVideo/TheLegendOfNeil'' did one in its second season.
* ''WebVideo/PrincessTutuAbridged'' did this for [[http://www.youtube.com/watch?v=3m-ndZnL-Bw Episode 12.]] Everyone was going out of their vocal range and/or having trouble with character voices and still manages to be enjoyable. Particularly a song about the famed reveal and ensuing [[PleasePutSomeClothesOn results]].
* ''Machinima/RedVsBlue'' season 14 had two examples.
** "Red Vs. Blue: the Musical!" features the obligatory [[LampshadeHanging Lampshading]] why everyone's singing to begin with, Church especially isn't happy about it. Of course, this is all justified as a retelling of their early adventures to the troops on Chorus by [[CampGay Donut]].
** "RVB Throwdown" is a RapBattle by the Reds and Blues [[spoiler:and Locus and Felix]] that takes up all but the first thirty seconds of the episode.
* ''WebVideo/SailorMoonAbridged'' crosses this idea over with all Anime/{{Pokemon}} songs... The results [[http://www.sailormoonabridged.com/ are quite interesting.]]
* Website/ThatGuyWithTheGlasses:
** ''WebVideo/BrowsHeldHigh'':
*** A ''Music/DavidBowie'' themed musical episode for the movie ''Film/TheManWhoFellToEarth''. This was probably the first internet review show to have this type of episode.
*** A ''Literature/BeautyAndTheBeast'' review (comparing ''[[Film/BeautyAndTheBeast1946 La Belle et la Bête]]'' with [[Disney/BeautyAndTheBeast the Disney version]]), a collaboration with WebVideo/SomeJerkWithACamera, and many many cameos.
** ''WebVideo/TheNostalgiaCritic'':
*** His ''Film/MoulinRouge'' [[http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/nostalgia-critic/33417-nostalgia-critic-musical-review-moulin-rouge review,]] which also featured collaboration with WebVideo/TheNostalgiaChick and Music/{{Brentalfloss}}, with cameos amongst others.
*** Since [[{{Uncancelled}} his return]], a collaboration with [[WebVideo/BrowsHeldHigh Oancitizen]] and [[WebVideo/PawDugan Paw]] on ''Film/LesMiserables2012''.
* ''WebVideo/TheTwilightChronicles'': "The Premonition" is considered a musical episode; however, only one musical number ("All Out of Love") is featured. Spenser Doherty's song "Cup of Coffee" was overdubbed with the real song due to his off-key singing and Gen Borg just danced to her song.
* ''Podcast/KingFallsAM'': Episode 40 involves a [[ItMakesSenseInContext racist witch]] chanting a spell to give the [[QuirkyTown town]] of [[WeirdnessMagnet King Falls]] a snowy Christmas during an unseasonable heat wave. One of the side effects though, much to [[AgentScully Sammy's]] horror is that everyone in town who calls in to the radio station now does so in song.
* WebVideo/Mega64 (Also the 2011 ''commentary'' for "Summer Semester".)

[[folder:Western Animation]]
* ''WesternAnimation/TwelveOunceMouse'': The episode "Auraphull" featured, among other things, a [[RatPack Rat Pack-esque]] cover of the theme song, and a [[StylisticSuck fuzzy, low quality VHS recording Live-Action guitar solo.]]
* ''WesternAnimation/TheAdventuresOfTeddyRuxpin'': Octopede Sailors had more songs than any other episode and could be considered this.
* ''WesternAnimation/TheAmazingWorldOfGumball'': The episode "The Singing" features an outbreak of "spontaneous singing" among the citizens of Elmore.
* ''WesternAnimation/AmericanDad'':
** "Hot Water", a parody of Theatre/LittleShopOfHorrors featuring Music/CeeLoGreen as a sentient hot tub.
** The episodes "Minstrel_Krampus" and "Rubberneckers" also qualifies.
* In one episode of ''WesternAnimation/{{Animalia}}'' a core spore blows and all the animals start singing everything they say.
* ''WesternAnimation/{{Animaniacs}}'' would occasionally feature songs in various segments, but one particular type--Rita and Runt--would ''always'' be a full musical, ranging from send-ups of ''Theatre/LesMiserables'' and ''Film/TheRockyHorrorPictureShow'' to adaptations of ''Literature/OfMiceAndMen.'' Justified in that Rita was voiced by none other than Bernadette Peters, one of the biggest Broadway stars of her era, so naturally the writers wanted to [[TheCastShowoff showcase her incredible pipes.]]
** The film ''WesternAnimation/WakkosWish'' was a full-on musical, and served as the GrandFinale for the series.
* ''WesternAnimation/{{Arthur}}'' did a music video episode: just a revue of musical numbers performed by the cast. It goes on about how wonderful libraries are. The songs range from the slightly embarrassing pseudo-rap "Library Card" to Brain [[http://www.youtube.com/watch?v=MiB4dMwDFtg singing about Dr Jekyll and Mr. Hyde]].
** There was also "The Ballad of Buster Baxter," featuring music from Art Garfunkel that told the story of Buster returning to Elwood City after traveling with his father, and the struggles he faced discovering that things had changed there. Garfunkel himself appeared in the episode as a moose actually singing the story; at the end of the episode, everyone realized that they had no idea where he came from.
* The ''WesternAnimation/BatmanTheBraveAndTheBold'' episode "Mayhem of the Music Meister!" is notable for having somewhat of an in-story justification: the story is about a villain with a hypnotic voice controlling the world through music. Probably the show's most audacious use of RefugeInAudacity.
** Although that doesn't explain Black Canary (and later, Green Arrow), breaking out into song on their own. Maybe they're just musical theatre fans. "[[LampshadeHanging Was the singing really necessary?]]"
* The 2006 revival of ''WesternAnimation/BikerMiceFromMars'' has this happen in the final episode "Turf Wars", including some [[VillainSong Villain Songs]] for the Nomad Rats, Hairball, Dr. Catorkian, and [[FaceHeelTurn an evil]] Harley.
* ''WesternAnimation/BobsBurgers'':
** Deconstructed in "Hamburger Dinner Theater" where Linda naively believes singing can make any situation better, even when they get robbed.
** Season 7 Premiere "Flu-ouise" has the A-plot of Louise having a fever dream that is basically a WholePlotReference to ''The Wizard of Oz'', in which several characters in her dream (voiced by her family) sing as well as Louise herself.
** The Season 8 ChristmasEpisode "The Bleakening" ups the ante by being an hour-long musical special with seven new songs.
* ''WesternAnimation/TheBrakShow'': In "Psychoklahoma", Brak and his family put on a musical adaptation of Creator/AlfredHitchcock's ''Film/{{Psycho}}''.
* ''WesternAnimation/BugsBunny'' had a few based on classical music, including "''WesternAnimation/RabbitOfSeville''" and "''WesternAnimation/WhatsOperaDoc''".
* In the ''WesternAnimation/CatDog'' episode "It's a Wonderful Half Life", Cat and Dog have a shared dream depicted as a black-and-white InkblotCartoonStyle musical.
* ''WesternAnimation/CloneHigh'' had "Raisin the Stakes: A Rock Opera in Three Parts".
* ''WesternAnimation/CodenameKidsNextDoor'' did ''two'' musical episodes: "F.O.O.D.F.I.T.E." (A heavy metal opera) and "L.O.V.E." (A ''Theatre/WestSideStory''-ish musical).
* ''WesternAnimation/CowAndChicken'' has one episode devoted to the school staging Cow's bizarre allegorical musical, "The Ugliest Weenie".
* In one episode of ''Curious George'' called "Sock Opera Monkey", George does a puppet show of the opera ''Hansel and Gretel'' to a recording of the music. In another, "Go West, Young Monkey", although he doesn't sing, several other characters do. (Most of this is a dream sequence.)
* ''WesternAnimation/DannyPhantom'' includes an episode told mostly in rhymes, like a Dr. Seuss story.
* ''WesternAnimation/{{Daria}}'', of all shows, had a musical episode aptly named "Daria!" And yes, Daria sings too.
** To be more accurate, she doesn't sing as such. More does the Rex Harrison talking/singing thing. Although her Dad and Trent have a killer heroic Duet...
*** She mainly talks in pitch instead of singing, but she ''does'' sing a few lines. Probably because she's just unmotivated, even in a musical. Perfectly in-character.
* ''WesternAnimation/DextersLaboratory'' had its oft-quoted even to this day ''[=LABretto=]'' episode, which presents itself as an origin story chronicling Dexter's rise from birth to building his secret lab.
* ''WesternAnimation/EekTheCat'' had "Quadrapedia", in which a pair of metal-singing sisters capture Annabelle due to being jealous of her beauty.
** Another episode involved Dee Dee getting a song stuck in her head, where most of the lines were sung to the tune of it.
* ''WesternAnimation/TheEmperorsNewSchool'': The Musical speaks for itself, really. Bonus for being a parody of ''Film/HighSchoolMusical''.
* The ''WesternAnimation/EvilConCarne'' episode "The Pie Who Loved Me" is almost entirely sung.
* "School's Out: The Musical", an episode of ''WesternAnimation/TheFairlyOddparents''. The holiday specials also feature musical numbers.
* ''WesternAnimation/FamilyGuy'' has done several episodes which are more or less shameless pandering to old-style movie musicals (often focusing primarily on Brian and Stewie and titled "The Road to <Insert Place Here>", which is itself an homage to the Hope/Crosby "Road" movie musicals; one of these, "The Road to Rhode Island", even included a song based on the ''Road'' theme itself). A lot of the episodes have one or more musical numbers in them without quite rising to the level of "Musical Episode". And then there's "The King Is Dead", an episode about a musical ("Peter Griffin Presents a Peter Griffin Production of Peter Griffin's ''The King and I'', a Peter Griffin Joint"). It's... not much like the actual musical.
* ''WesternAnimation/FreakyStories'' chose to tell the UrbanLegend of "[[HookHand the Hook]]" as a Musical Episode.
* ''WesternAnimation/{{Futurama}}'':
** The last third of "The Devil's Hands Are Idle Playthings" is an opera. As sung by the cast.
** There were also musical numbers in other episodes, such as "Hell Is Other Robots".
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy''s episode "Little Rock of Horrors". It features a very catchy swing-type tune sung by a brain eating alien. Which was sung by ''Music/{{Voltaire}}''.
* ''WesternAnimation/HeyArnold'' had "[[http://www.youtube.com/watch?v=Qe9FMOAlXlE What's Opera, Arnold?]]," an AllJustADream rendition of ''Carmen'' with the kids from the show.
* ''WesternAnimation/JohnnyBravo'':
** "The Sensitive Male!" has Johnny being subjected to a parody of ''WesternAnimation/SchoolhouseRock'' as Jack Sheldon tries to teach him how to be more sensitive towards women.
** "Traffic Troubles" has Johnny getting sent to "Musical Comedy Traffic School" for jaywalking.
* ''WesternAnimation/{{Kaeloo}}'': Episode 89. Interestingly, all the characters who are usually HollywoodToneDeaf were able to sing well.
* ''WesternAnimation/KappaMikey'' had "The Karaoke Episode", which involved a magic karaoke machine that forced everyone to sing instead of talk.
* ''WesternAnimation/KimPossible'''s "Rappin' Drakken" comes close to being a musical episode.
* ''Literature/TheMagicSchoolBus'' has "The Family Holiday Special", a ChristmasEpisode which features several Christmas Carols with lyrics re-worked about the episode's theme of recycling.
* ''WesternAnimation/TheMarvelousMisadventuresOfFlapjack'' has ''All Hands on Deck''.
* ''WesternAnimation/{{Metalocalypse}}'' has songs in every episode, but season 3's "Rehabklok" was more of a cohesive musical.
** ''WesternAnimation/MetalocalypseTheDoomstarRequiem: [[PunnyName A Klok Opera]]'' is more or less a rock opera, with there being very few actual spoken lines present.
* ''WesternAnimation/MiraculousLadybug'' has "Santa Claws", which doubles as the ChristmasEpisode.
* ''WesternAnimation/MyGymPartnersAMonkey'' has a rather unique variation known as "Animal School Musical". The episode is justified in-universe as the result of a [[ItMakesSenseInContext magic wish gone wrong]] and the characters are literally ''forced'' to sing whenever the universe finds it appropriate.
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' does regularly feature musical numbers, however some episodes have been full-fledged musical episodes themselves:
** The season 3 finale "Magical Mystery Cure" manages to cram seven songs into 22 minutes. It's also a WhamEpisode that sees [[spoiler:Twilight Sparkle becoming an alicorn princess.]]
** The season 4 episode "Pinkie Pride" is also a musical episode. With good reason, as Music/WeirdAlYankovic guest-stars as rival party planner Cheese Sandwich.
** The season 5 episode "Crusaders of the Lost Mark" features six songs, among some [[WhamEpisode major]] CharacterDevelopment.
** The season 6 episode "A Hearth's Warming Tail", unlike the above three, does not have a musical guest star and is not a WhamEpisode; however, it does fit the ChristmasEpisode feel.
* The second half of the hour long "Return of Doctor Blowhole" ''WesternAnimation/ThePenguinsOfMadagascar'' special is a musical episode. An incident involving a power cell, a device used to turn people evil and an MP3 player creates a machine that forces everyone to sing in it's field of effect. Cue the villain taking it over and the rest of the cast trying to stop it...all in song!
* {{Invoked|Trope}} in the ''WesternAnimation/PennZeroPartTimeHero'' episode "The Princess Most Fair", where the heroes and villains are teleported to a kingdom that magically compels its inhabitants to sing everything they say.
* ''WesternAnimation/PepperAnn'' had one. Pepper Ann was auditioning for a musical at school, fell off the stage, and blacked out; when she came to her life was a musical. [[AllJustADream It turned out to be a dream]] when she came to for real.
* ''WesternAnimation/PhineasAndFerb'' has one or more songs per episode, not joking, but there's a number of full-fledged examples:
** "Dude, We're Getting the Band Back Together" has ''four'' songs, one of which was nominated for an Emmy.
** The ChristmasEpisode would also qualify.
** The "Wizard of Odd", a WholePlotReference to ''Literature/TheWonderfulWizardOfOz'', which has the added bonus of having its Musical Episode status {{lampshade|Hanging}}d at every possible opportunity.
** "Rollercoaster: The Musical" is a full musical episode based off the plot of the first episode, where most of the catch-phrases and running gags get their own songs.
** ''WesternAnimation/PhineasAndFerbTheMovieAcrossThe2ndDimension'' has eight songs, not counting the deleted one ("Mysterious Force").
* The ''WesternAnimation/PinkyAndTheBrain'' episode "Mouse of La Mancha" is, as the title suggests, a WholePlotReference to ''Theatre/ManOfLaMancha'', with appropriately altered versions of the title song and "To Dream the Impossible Dream".
* The ''ComicStrip/{{Popeye}}'' cartoon "The Man on the Flying Trapeze" has almost all the music and words played to the tune of the song.
** A number of other Popeye shorts (mainly in the Fleischer Studios era) are this as well.
* As the title indicates, "Garbage Night: The Musical" is the musical episode of ''WesternAnimation/PoundPuppies1980s''.
* Except for possibly a few sentences, the ''entire episode'' "See Me Feel Me Gnomey" of ''WesternAnimation/ThePowerpuffGirls'' is completely in song. Which in this case makes it a RockOpera. In fact, the title of the episode is a reference to Music/TheWho's Music/{{Tommy}}.
* ''WesternAnimation/{{Reboot}}'s'' recap of the third season in the last few minutes of the last episode (of the third season) does this.
* ''WesternAnimation/RockosModernLife'' had the [[GreenAesop Earth Day]] episode "Zanzibar", which was lampshaded throughout ("How did you all know the words?" "We practiced every Tuesday. Didn't you see the flyers?")
--> '''Chorus:''' R-E-C-Y-C-L-E recycle!\\
C-O-N-S-E-R-V-E conserve!\\
Don't you P-O-L-L-U-T-E\\
Pollute the rivers, sky, or sea\\
Or else you're gonna get what you deserve!
** "And you know what they say..." - [[LampshadeHanging "It's going to be a song, isn't it?"]]
*** "We're a big unruly mob ..."
** ''Rocko'' writers Dan Povenmire and Jeff "Swampy" Marsh noted that with every episode they wrote (including the above "Zanzibar") they tried to work in a musical number, even when there didn't need to be one. [[WesternAnimation/PhineasAndFerb Guess what they ended up creating later.]]
* ''WesternAnimation/RubyGloom'' did an hour-long episode called "Hair(less): The Musical".
* ''WesternAnimation/{{Rugrats}}'' had an episode where the rest of the babies try to teach Dil to appreciate music. To do so, they sing their own renditions (complete with reworked lyrics) of classic songs such as "Bicycle Built For Two," "You Made Me Love You," and "Pack Up Your Troubles."
** There was also the laundromat-set ''Theatre/WestSideStory'' parody "Wash/Dry Story".
* The direct-to-video feature ''WesternAnimation/ScoobyDooMusicOfTheVampire'' is essentially a musical as the Scooby gang and the feature's incidental characters break out singing throughout.
* ''WesternAnimation/TheSimpsons'' has done countless {{musical episode}}s, including "[[Music/{{Evita}} The President Wore Pearls]]", "[[Film/MaryPoppins Simpsoncalifragilisticexpiala(Annoyed Grunt)cious]], "[[Theatre/MyFairLady My Fair Laddy]]," "[[Theatre/TheSoundOfMusic Yokel Chords]]", "[[Theatre/SweeneyToddTheDemonBarberOfFleetStreet Treehouse of Horror XX: There's No Business Like Moe Business]]" and "Elementary School Musical".
** In addition, the show often parodies TheMusical, especially AllMusicalsAreAdaptations. See the former article for more information.
** There's also the ClipShow "All Singing, All Dancing," which highlights musical numbers throughout the first eight seasons. Almost all the framing sequences are entirely in song.
* ''WesternAnimation/SouthPark'' has done many musical episodes, too, including TheMovie.
** Perhaps most notably, "Elementary School Musical" in which a new kid appears who is forced by his father to treat the world like a musical. Most of the school joins in.
* ''WesternAnimation/SpaceGhostCoastToCoast'' had "[[http://www.snard.com/sg/ghostbill.html Boatshow]]".
* ''WesternAnimation/SpongeBobSquarePants'': The TV movie "Atlantis [=SquarePantis=]".
** Several specials certainly qualify also. "Hello, Bikini Bottom", "The Sponge Who Could Fly", and "[=SpongeBob=]'s Last Stand" most notably.
* ''WesternAnimation/{{Squidbillies}}'': "America: Why I Love Her".
* ''WesternAnimation/StevenUniverse'' has "Mr. Greg", which doubled as a serious CharacterDevelopment episode where Greg and Pearl hashing out their feelings about Steven's MissingMom Rose Quartz[[note]]The three of them were in a LoveTriangle that Greg won with little effort[[/note]] and finally becoming friends during a trip to [[BigApplesauce Empire City]]. There's also "Last One Out of Beach City", which doesn't have the characters sing, but the usual background music is replaced with songs by indie garage rock musician Mike Krol, justified as they're going to see his concert.
* "Bad Rap" from ''WesternAnimation/TheSuperMarioBrosSuperShow''.
* ''WesternAnimation/TinyToonAdventures'' had 2 music video episodes. One was ''Tiny Toon Music Television'' and the other was ''Toon TV'', as the characters do their cover of oldies songs from the 50's, 60's, 70's, and 80's.
* ''[[WesternAnimation/TotalDrama Total Drama World Tour]]'' is a musical '''season'''. Chris would require the contestants to sing during certain challenges, mainly [[TheGadfly to mess with them]].
** The episode "The Princess Pride" in ''Total Drama Action''.
* "I Have Heard the Robots Singing" from ''WesternAnimation/TransformersRescueBots'', the first musical episode in the history of the ''Franchise/{{Transformers}}'' franchise.
* ''WesternAnimation/VeggieTales'' had "Lyle the Kindly Viking". One moment [[PlayingWith plays with this]] when Sven (Larry) sings a line that wasn't necessary to do so, which later goes UpToEleven when he admits it's a musical while he ''also sings that line.''
* ''WesternAnimation/WanderOverYonder'' has "My Fair Hatey", an episode in which Wander helps Lord Hater prepare to ask [[spoiler:Lord Dominator]] out on a date, while Commander Peepers teams up with Sylvia to put Dominator out of commission once and for all.