History Music / CosMo

* Dennoh Skill

* AxCrazy: The resurrected virus!Miku in "Hyper∞lation" LaughingMad

* CameBackWrong: Miku in "Hyper∞lation" [[DamagedSoul isn't quite the same anymore...]]

* MindScrew: Fans are already whacking their brains out which came first: ''Radio Girl and the Fantastic Garden'', or the Fantastic Garden series. Or that either are just very coincidentally the same. Or that it's a result of [[CanonWelding cosMo simply wanting to]] screw with us.

** "Disappearance" is the Dead End, in which Miku is deleted. "Hyper∞lation" serves as this end's sequel, but things [[FromBadToWorse get worse for her her]] as she is [[CameBackWrong horribly resurrected]]).

* RealityEnsues: "The Real Disappearance of Hatsune Miku" rather bluntly describes how Hatsune Miku would die in real life: she would lose her charm and be forgotten, and the world will move on to the next fun thing, much as it had done in the past.

* MotorMouth: Possibly the most famous implementation of it in all of Vocaloid music, with some of his most famous songs featuring singing so impossibly fast that humans were never meant to replicate in real life.

* MotorMouth

* [[VideoGame/TheCaligulaEffect2 XXXX_XX_XX]]

* [[VideoGame/{{Caligula}} Distorted † Happiness]]

In addition to Vocaloid songs, [=cosMo=] also produces songs for Doujin music label Diverse System and several VideoGame/{{BEMANI}} games, including ''VideoGame/SoundVoltex'' and ''VideoGame/{{beatmania}} IIDX''. While he does produce some BEMANI songs featuring Vocaloids, some of his other songs are completely original works with no Vocaloids, sometimes instrumental works (such as the majority of his Diverse System works), most notably "For [=UltraPlayers=]", which was used for the final round of the ''Sound Voltex'' tournament at Konami Arcade Championship 2013 and is one of the hardest songs in the entire game.

In addition to Vocaloid songs, [=cosMo=] also produces songs for several VideoGame/{{BEMANI}} games, including ''VideoGame/SoundVoltex'' and ''VideoGame/{{beatmania}} IIDX''. While he does produce some BEMANI songs featuring Vocaloids, some of his other songs are completely original works with no Vocaloids, most notably "For [=UltraPlayers=]", which was used for the final round of the ''Sound Voltex'' tournament at Konami Arcade Championship 2013 and is one of the hardest songs in the entire game.

* EscapismAesop: The ''Star Girl'' and ''Fantastic Garden'' series have heavy themes against escapism, as most of the girls that come into contact with the Garden are escaping something or other from their real lives, and when they remember what that was they all fall into despair. The only person who enters the Garden and doesn't do this is Radio Girl, [[PlayingWith but]] she's also the only girl to end her song happier than when she started out.

** ''Dr. Realist'', meet Radio Girl. It's implied at the end of the song that her attitude towards Dr. Realist is a ''bad'' thing, however, since [[spoiler:He's really trying to help the residents of the Fantastic Garden (in his own weird way and she wholesale rejected him. He's more annoyed than anything after the ordeal]].

* AGodAmI: Miku in ''Disappearance''.
* AlternateCharacterReading: ''Anti The Fantastic Garden'' is spelled with the kanji for "The Girl's Fantastic Garden" in reverse. Often abused in ''Disappearance'' songs' lyrics.

* AnachronicOrder: On the ''Disappearance'' CD, ''Zero'' is track 8, and is presented as Miku remembering her own first startup.
* ArcSymbol: The infinity symbol pops up a lot in both the *Disappearance* series (where it's most seen) and in the *Star Girl*/*Fantastic Garden* series.
* AxCrazy: The resurrected virus!Miku.
** LaughingMad

* ButtMonkey: Len.
* CameBackWrong: Miku in ''Hyper∞lation'' [[DamagedSoul isn't quite the same anymore...]]
* CanonWelding: In one of the bad endings Miku imagines to ''Disappearance'', she winds up in the Fantastic Garden. The writer in ''Fantastic Garden,'' who originally had a cameo in ''Runaway Boy,'' turns out to be another real resident of Stella. Stella herself was the singer of a one-shot song, but then popped up again in the Star Girl series as one of the masterminds behind it.
* ChekhovsGunman: The protagonist of ''The Reincarnated Girl and the Reincarnated Boy'' shows up again in ''The A.I. Girl and her Deep-Sea Heart'', where she is not only revealed to be [[spoiler:the same person as Rho]], but also ends up [[spoiler:liberating Stella and everyone who was stuck in her town, succeeding where Dr. Realist always failed]].

* DarkerAndEdgier: The Cinematic Version of ''The Disappearance of Hatsune Miku'' created for VideoGame/TaikoNoTatsujin is ''much'' darker than its original version, taking a more horror-themed interpretation of Miku's deletion.
* DeathByCameo: Runaway Boy and the Lost Girl features short cameos by the Fantastic Garden writer, Rin and Len from Atriesta, the girl from R-18, and Lucy(A.K.A Shii-tan,the little girl from Capsule). Lucy is sitting on top of a skyscraper. She's so enamored by her drug-induced hallucinations that she falls off.
* DownerEnding: Doesn't the last few seconds of ''The Adventurer Girl and the Playground of Eden'' sound familiar? [[spoiler: That's right. It's her own electro-cardiogram.]]
** TheEndOrIsIt: [[spoiler: It could as well be that it was removed, which means she got out of the hospital. But we all know cosMo does not like like Happy Endings like that.]]
** Nope. In ''The AI Girl and Her Deep-Sea Heart'', Miku sings about not being able to think while dying while an image of the character lying still in the hospital gown she wore at the end of the PV appears on screen. So, it's fairly safe to say she didn't live.

* {{Gayngst}}: The protagonist of ''Reincarnated Girl''.

* IWantMyBelovedToBeHappy: "Reincarnated Girl/Boy" towards "Lost Girl".
* LastNoteNightmare: ''Demise'' and ''Runaway Boy and the Lost Girl''.

* MissionControl: Luka in ''Rainbow Adventure NTG Remake''.

* MultipleEndings: ''Demise'' is the "Worst End" (in which Miku is [[DyingAlone abandoned by her master in the forest]]) ''Disappearance'' is the "Dead End" (in which Miku is deleted with ''Hyper∞lation'' being its sequel where she is [[CameBackWrong horribly ressurected]]), ''∞'' is the "True End", and ''Intense Song'' is the "[=INFiNTY=] Happy End" (both in which Miku finally accepts her fate as a Vocaloid).
* RealityEnsues: ''The Real Disappearance of Hatsune Miku'' rather bluntly describes how Hatsune Miku would die in real life: she would lose her charm and be forgotten, and the world will move on to the next fun thing, much as it had done in the past.

** ''Dr. Realist'', meet Radio Girl.

* TakeThat: ''Dr. Realist'', meet Radio Girl.

** ''For [=UltraPlayers=]'' was one of the final round songs in the ''Sound Voltex II'' section of Konami Arcade Championship 2013. Furthermore, while the series' difficulty to that point peaked at level 15, it was one of the first two songs to have a chart rated a '''16'''.

He does a number of his illustrations himself, and also has personally covered a number of Vocaloid songs. [=cosMo=] is said to have an unusually "cute" voice for a male singer. ([[http://www41.atwiki.jp/niconico_singer/pages/390.html Judge for yourself]].) He has recently released a Vocaloid cover CD called "What Do You Mean ''You're'' Gonna Sing?!!", in which he covers a number of his own works.

[=cosMo=], also called Bousou-P after one of his more popular works, is an animator and prominent Music/{{Vocaloid}} composer. He has become famous in the Vocaloid community for producing a vast number of extremely fast-tempo songs (often over 200 bpm), pushing the software to its limits. He has composed music sung by Hatsune Miku, Kagamine Rin and Len, Megurine Luka, Gumi, and Gakupo; while most of [=cosMo=]'s works are Miku songs, he claims that his favorite Vocaloid is Kagamine Len.

In addition to Vocaloid songs, [=cosMo=] also produces songs for several Franchise/{{BEMANI}} series, including ''VideoGame/SoundVoltex'' and ''VideOGame/{{beatmania}} IIDX''. While he does produce some BEMANI songs featuring Vocaloids, some of his other songs are completely original works with no Vocaloids, most notably "For [=UltraPlayers=]", which was used for the final round of the ''Sound Voltex'' tournament at Konami Arcade Championship 2013 and is one of the hardest songs in the entire game.

[=cosMo=] has produced three series--the ''Fantastic Garden'' series, its sequel ''The Star Girl and the Illusion Paradise'', and ''The Disappearance of Hatsune Miku,'' which is responsible for his leap to fame. He has produced a number of mini-albums, and his songs are often included in Miku compilation [=CDs=]. ''Fantastic Garden'' is known for being extremely surrealist, and ''The Disappearance of Hatsune Miku'' chronicles the experience of what life is like for an actual Vocaloid program with a merciless eye. The ''Disappearance'' series, along with a few new songs, has been released as a full-length CD which will also be [=cosMo=]'s major debut.

* MultipleEndings: ''Demise'' is the "Worst End", ''Disappearance'' is the "Dead End" (and ''Hyper∞lation'' is its sequel), ''∞'' is the "True End", and ''Intense Song'' is the "[=INFiNTY=] Happy End".

* [[EarnYourHappyEnding The Intense Song of Hatsune Miku]]

* ShoutOut: The official art for Sadistic.Music∞Factory has Miku's eyes [[UnusualPupils replaced]] by ''Project DIVA'' note markers.

* Sadistic.Music∞Factory

** The ''VideoGame/HatsuneMikuProjectDIVA'' games ''love'' setting cosMo songs as these. The first game kicked it off with ''The Disappearance of Hatsune Miku'' as its FinalBoss. Then its sister song ''The Intense Voice of Hatsune Miku'' ejected ''Disappearance'' from its position in the second game and its UpdatedRerelease ([[NintendoHard and this version of the song remains one of the hardest songs in the series]]). ''F'' threw in the original song ''Sadistic.Music∞Factory'' as its FinalBoss. ''F 2nd'' finally broke the trend by [[{{Nerf}} nerfing]] ''Intense Voice'' and setting the FinalBoss to ''Two-Dimensional Dream Fever''. ''X'' then brings this back in full force with ''The Ultimate Medley'', a compilation of ''several'' of his songs into one track!