[[quoteright:235:http://static.tvtropes.org/pmwiki/pub/images/melofoblivion.jpg]]

->''"A great war took place in the 20th century. It was a full-blown war between humans and monsters. Words alone could not describe the violent struggle that ensued. And in the end, [[TheBadGuyWins the monsters were victorious]]. Days passed and a new century began. And slowly, people began to forget that melody."''
--> -- Melody of Oblivion

Many years ago, there was a war between the humans and the Monsters. The Warriors of Melos fought valiantly, but in the end, the Monsters won, and rule from the shadows. The children of the current era are completely ignorant of the battles of the past, even as children mysteriously disappear, sacrifices to placate their Monster overlords.

''Melody of Oblivion'' chronicles the journey of Bocca and his allies as they fight Monsters and, more often, the humans of the Monster Union, searching for the truth behind the phantom girl called 'Melody of Oblivion' whom only Warriors of Melos can see.

An extremely surreal show full of flashbacks and flashes to symbolic portrayals of the action, strong themes of the show are the loose line between reality and fantasy and rebellion against society's mores.

A 24-episode anime series by JCStaff (with help from StudioGainax) that originally aired in 2004. There is also a six-volume manga adaptation produced by Kadokawa Comics.
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!!This show provides examples of:

* AfterTheEnd: The monster war ostensibly happened in the 20th century, and the technology we see matches this. However, the war itself has left relics that suggest they were actually far more advanced. Considering the level of reality warping the monsters do, the war may even be in the future.
* ANaziByAnyOtherName: "Viva Monster Union!"
* [[spoiler: AndTheAdventureContinues]]: The final scene (combined with [[spoiler: HereWeGoAgain and WhereItAllBegan]]).
* AnimalThemeNaming: All of the Monster Union agents have one that reflects both their respective mecha and their personality.
** They also correspond to pretty much everything in the EasternZodiac.
* AnythingThatMoves: Coco (at least she tries).
* BadassAdorable: Coco.
* {{Badass Biker}}: Not so much in the anime, but in the manga Kurofune is exactly this.
* BadassLongcoat: Bocca.
* BadassNormal: Sayoko doesn't have any Melos abilities. The only things she's good at are tricking and stealing. Which proves enough to save the whole bunch of Badasses from mortal peril.
* BeingGoodSucks: That's what each new Melos Warrior learns very quickly.
* BottomlessBladder: Averted by Coco using the "[[GratuitousEnglish Ladys]]" on the Mahoroba: "It's difficult to do this in Zero G."
* ByThePowerOfGrayskull: "Echo, my Melos!"? "Singing Chord, Feeling of {whatever}!"? "Just Fit Rim!"
* ByronicHero: Child Dragon is a perfect parody.
* ChainedToARock: Apparently the Minotaur's sacrifice of choice. A flashback reveals that [[spoiler: Sayoko]] went through this.
* ChasteHero: Bocca takes this to the extreme, passing on both Elle's and [[spoiler:Sayoko's]] offer of sex to go adventuring.
* ChildEater: The monsters accept children as sacrifices, although Horu is the only monster depicted as actually devouring his.
* ClassicalMythology: The Monsters' names and appearances are borrowed from Greek myths.
* DeadAllAlong: [[spoiler: The Melody of Oblivion.]]
* DerangedAnimation: All scenes involving Monsters, especially The Labyrinth and Hecate's bowling.
* DisneyVillainDeath: [[spoiler: The Monster King.]]
* DressHitsFloor: Clothing in general in fact, at the snap of a finger.
* EasternZodiac: Monster Union mechas plus The Monsters' true forms.
* EmpireWithADarkSecret: It seems like peace reigns in every day life... until you realize it's maintained by sacrificing the lives of children.
* ExactlyWhatItSaysOnTheTin: Flying Bunny.
* ExplosionsInSpace:
-->? 'Echo, my Melos'? Is sound supposed to travel in space??
-->? Boy, they just seem to lack the simple common sense...
* EvilGloating: Monster Union members revel in this. [[spoiler: Episode 23 consists of it almost entirely.]]
* FacelessGoons: Hordes of clerks working for Monster Union. Oh, wait... are ''those'' really tourists, or has a toy factory conveyor sprung a leak?
* {{Fanservice}}: The girls' Melos Arrow firing are all - more than a little erotic, and this is just the ''beginning''. Other examples include Sayako's outfit and the cowgirls in the final four episodes.
* GainaxEnding: Subverted. The degree of {{Mind Screw}} grows steadily over three episodes, and then all of a sudden you get a perfectly comprehensible ending.
* {{Gainaxing}}: 'Farm girls' gains a whole new meaning.
* HarbingerOfAsskicking: The same musical theme preceding each villain's appearance.
* HaremAnime: Parodied by the Armed Theatrical Group Chentauro.
* HeroicSacrifice: [[spoiler: Except Bocca and Elan Vital, Toune, Koko, and their Aibar Machines get voluntarily stuck in time and are left behind. Kurofune stays in the labyrinth to make sure Horu remains inside.]]
* HeyItsThatVoice: Apparently [[Creator/YuriShiratori Nanami Kiryu]] has sprouted bunny ears recently.
** And immediately after this series ended, [[Creator/YukariTamura Coco]] changed her catchphrase to "[[MagicalGirlLyricalNanoha Raising Heart, Set Up!]]" Also, [[MasumiAsano Sayoko]] looks and sounds a lot like [[IkkiTousen Hakufu Sonsaku]].
* HitlerAteSugar: Taken ad absurdum in the "Monster Olympus" scene.
* HollywoodToneDeaf: Child Dragon. His rendition of the show's ending theme is really awful.
* HonorBeforeReason: Kurofune.
* HumanSacrifice: That very means which [[UtopiaJustifiesTheMeans Utopia justifies]].
* HumongousMecha: The Monster Union's robot monsters.
* IfYouKillHimYouWillBeJustLikeHim: [[spoiler: This is how Monster Kings are made.]]
* LimitedAnimation: Particularly jarring. It gets really boring seeing the same arrow shooting sequence after the third episode. It gets worse though--the sequence changes and becomes '''longer'''.
* LongLostRelative: [[spoiler: Sayoko has a brother in the Monster Union codenamed Lucky Thoroughbred, and Coco is the long-lost daughter of the Japanese Prime Minister.]]
* LoveableRogue: Sayoko.
* MarkOfTheBeast: Monster Union agents get branded with one.
* MindScrew: What are the ape men? How did the war begin and end? [[spoiler:Why isn't Bocca the 4th monster king? Is Sayako still alive, or is she just like the Melody of Oblivion?]]
* MomentKiller: Poor Bocca and Sayoko manage to turn into an OfficialCouple around halfway in the series, but never seem to progress beyond that due to interference (mostly type 2) from just about anything, including a goddess and the Prime Minister of Japan.
* PlayboyBunny: Monster Union agent Flying Bunny and her robot monster.
* PoweredByAForsakenChild: Metaphorically, the whole society. Literally, the robot factory.
* RealityWarper: The monsters.
* RuleOfCool: Sentient flying motorcycles? Why not? Sentient flying motorcycles that transform into {{Bishounen}}? Even better!
* RocketJump: How about a ''Crossbow Jump''?
* RocketPunch: Wrench Monkey's ape mecha.
* SceneryPorn: Melody Of Oblivion's water color style backgrounds are very beautiful, although because of the rich symbolism and strange locations, they often are important to the plot.
* ScrewDestiny: Bocca uses it [[spoiler: to escape from Minotaur]].
* SortingAlgorithmOfEvil: The Monster Union remembers about this in the last two story arcs. Apparently the remaining Agents {{Took A Level In Badass}} over the preceding series.
* SpaceIsAnOcean: Child Dragon's idee fixe.
* SpaceIsNoisy: [[LampshadeHanging Lampshaded]] by Flying Bunny - "Did she just say 'Ring out! My Melos!'? In the vacuum of space, where no sound travels?"
* SpellMyNameWithAnS: In the fansub all the Melos attacks coincide with poker hands, but in the official translation Bocca's 'Flush' is changed to 'Flash'. The anime also bleeds musical terminology (as per the title), but the official translation oddly changes 'Bio Concerto' to 'Bio Co-ordination'.
** The Geneon subs have "Bio Concerto", and only use "Flash" in some early episodes (switching to "Flush" later).
* SplitPersonality: [[spoiler: The Monster King]] has gone too far in talking to himself.
* StoryArc: The episodes are grouped into three episode arcs except for the first two episodes and last episode.
* SuckingInLines: Child Dragon's Robot Monster.
* SuperRobot: Each Monster Union agent rides in one.
* TakingTheBullet: [[spoiler: Apparently doesn't help when [[KarmicDeath performed by a ghost]].]]
* TalkingAnimal: The true-false parrot who passes on messages to Monster Union agents from fellow agents[[spoiler:, although it's really Solo, a.k.a. the Monster King, doing a ventriloquist act.]]
* TheCape: Melos Warriors in the Space Arc.
* TheMaze: Usually the Minotaur is inside the Labyrinth. Now, how about [[MindScrew the Labyrinth inside the Minotaur]]? To make things worse, ''[[WhatDoYouMeanItWasntMadeOnDrugs both variants apply simultaneously]]''. And, to crown it all, [[HyperSpaceIsAScaryPlace time and space go totally nuts]] in there.
* TheStarscream: Lucky Thoroughbred shows signs of this in his appearances.
* TravelCool: A four-legged horned bus. And a ship going through forests. And, of course, sentient flying motorbikes.
* {{Tsundere}}: Toune is a "Type Tsun" one, reserving her "deredere" exclusively for Sky Blue.
* TheUnfought: Contrary to expectations, the vast majority of antagonists are ''not'' monsters, but the humans supporting them and their "robot monsters". The only monsters Bocca confronts are Horu, Hecate, [[spoiler: and Pan in the final episode.]]
* {{Unobtainium}}: The Omotenium Bomb.
* TheUnfavorite: Sayako.
* UtopiaJustifiesTheMeans: Humanity as a whole abides by this, but especially the Monster Union Agents.
* VillainOfTheWeek: Monster Union agents.
* VillainousDemotivator: "Arukoto Naikoto!!"
* WhatTheHellTownspeople: It usually turns out that nobody's innocent, but most humans seem fairly united in their hatred of the heroes.
* WingedHumanoid: [[spoiler: Elan Vital. As if being a flying sentient bishounen motorcycle is [[RuleOfCool not enough]].]]
* YouGottaHaveBlueHair: The Melody of Oblivion and all the Melos Warriors.
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!!Episodes of this series provide examples of:
* DoesThisRemindYouOfAnything: Bioco-ordination in the space arc, the riders even get a O-face.
* GlassesGirl: Elle, Bocca's first crush.
* ItsNotYouItsMyEnemies: You really should have said that ''before'' you kissed her 73 times, you know.
* {{Joshikousei}}: Coco, and really all of the female Melos Warriors. Sayoko is the right age, but never wears a uniform.
* MotorcycleOnTheCoastRoad
* PlotBasedVoiceCancellation: When Sayoko is talking to Bocca as the door to the maze closes, and (audience only) what the Melody says to Bocca in the final episode.
* StartOfDarkness: We see this for Monster Union agents Midnight Hiyoko and Millionaire Beaver and the Monster King.
* BlandNameProduct: Bocca buys Sayoko dinner at 'Starducks Coffee'.
* ShoutOut: The opening soundtrack of the space episodes is a blatant rip-off of ''StarWars''.
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