* FilkSong: As noted on the main page, a number of IOSYS' songs can be thought of as being in the parody-filk style (credit goes to the [[http://en.touhouwiki.net/wiki/IOSYS Touhou Wiki]]):[[note]]For the sake of not having to worry about Website/YouTube videos breaking at a later date, no links to the examples will be provided. Go look them up yourselves.[[/note]]
** "Alienation" = "Shame" by Shuuchishin
** "Autumn's Soldiers -- Aki Sisters" = "DANZEN! Futari wa Precure" from ''Anime/PrettyCure''
** "be in love with you" = "Tomorrow" from ''LightNovel/FullMetalPanic''
** "Blue Cirno" = "Kuroneko no Tango" by Osamu Minagawa
** "Bukkome! Yuuka-san! ~ Ano Koro no Uchi wa Yabakatta" = "Rokkinpo Goroshi" by Music/MaximumTheHormone.
** "Burst!!" = "Turbo" by Paul Elstak featuring New Kids
** "Bursting Summer and Brilliant Watch" = "Renai Circulation" from ''LightNovel/{{Bakemonogatari}}''
** "By the Time the Dream Comes to an End" = "By the Time the World Comes to an End" from ''Manga/SlamDunk''
** "Cancel Transformation! Gross Keine" = "Douwa Meikyuu" from ''Anime/FairyMusketeers''
** "Captain Murasa's Ass-Anchor" = "Danjo" by Tarou[[note]]Partial parody; listen to the parts of "Captain Murasa" that aren't being sung[[/note]]
** "Care over!!" = "Get Up (I Feel Like Being a) Sex Machine" by Music/JamesBrown[[note]]Partial parody; the relevant parts of "Care over!!", beyond the general funk sound, are the bits surrounding the verses[[/note]]
** "Club Ibuki in Break All" = "Love DQN" by CLUB PRINCE
** "DEAD GIRLS BE-BOP!!" = "Tank!" from ''Anime/CowboyBebop''
** "Desire" = "Bad Romance" by Music/LadyGaga
** "Family's House" = "Hitori" by Gospellers
** "Fraulein Lilie" = "Kinjirareta Asobi" from ''Anime/RozenMaiden''
** "Heartful Neko-romancer" = "Thriller" by Music/MichaelJackson
** "Keine's Drawing Song" = "Soup's Drawing Song" from ''Okaasan to Issho'' (see also the parody of this song in ''Manga/SayonaraZetsubouSensei'')
** "Kire Kire Mayoi" = "Hare Hare Yukai" from ''LightNovel/HaruhiSuzumiya''[[note]]Blatant cut-paste lyric swap[[/note]]
** "Laser Mari Fantasy" = "Pegasus Fantasy" from ''Manga/SaintSeiya''[[note]]Blatant cut-paste lyric swap[[/note]]
** "Letty Whiterock You!" = "We Will Rock You" by Music/{{Queen}}
** "Love-Coloured Damage Report" = "Sketch Switch" from ''Manga/HidamariSketch''
** "New Attack Resurrection" = "only my railgun" from ''Manga/ACertainScientificRailgun''
** "Omorashi no Kami-sama" = "Toilet no Kami-sama" by Kana Uemura
** "Oshiri Sanae Mushi" = "Oshiri Kajiri Mushi" from ''Minna no Uta''
** "PAN PAN PANTY" = "PON PON PON" by Music/KyaryPamyuPamyu
** "PERFECT FREEZE" = "SKILL" by Music/JAMProject
** "Saint Marisa's Gift" = "Rudolph the Red-Nosed Reindeer"
** "Satosatorirasatosatorirasatorira Daibakuhatsu" = "Yuriyurarararayuruyuri Daijiken" from ''Anime/YuruYuri''
** "Screaming Cool Match" = "Zetsubou Billy" from ''Manga/DeathNote''
** "Song for the Cruelty of the Hell of the 60 Year Flowers of Sin" = "Saintly Girl Territory" from ''Anime/RozenMaiden''
** "There Are No Bombs" = "There Are No Umbrellas" by Yousei Inoue
** "The Traveling Emotions of Love At A Moon-viewing Hot Spring" = "Usagi" (a Japanese children's song)[[note]]This one seems like kind of a stretch; however, because it is listed on the Touhou Wiki, it's listed here[[/note]]
** "The Ultimate Yakiniku Restaurant! Orin's Hell Mansion!" = "Love Dial 6700" by Finger Five[[note]]Partial parody; listen to the first 30 or so seconds of "Love Dial 6700" and compare[[/note]]
* HeAlsoDid: They're most known for their Touhou arranges, especially in the west (it's telling that this very article is entirely about their Touhou works) but they also create original songs as well, as well as songs for Series/{{Bemani}} games, [[BishoujoGame bishoujo games]], and anime such as ''Anime/KaitouTenshiTwinAngel'' and ''Manga/PenguinMusume''.
** The singer Miko is such a staple of IOSYS that many assume she's a member of the circle. She's not. Though she has worked with IOSYS extensively and is most famous for that, as of late she's also known for her collaborations with the Utaite Momobako, and she also sang the OP to the OtomeGame ''Kaeru Batake DE Tsukamaete''.
* NoExportForYou: There's nothing stopping non-Japanese Touhou fans from buying IOSYS's music... except for the one minor detail that almost none of the stores that stock their material (including their own) ship internationally. [[http://ekizo.mandarake.co.jp/shop/en/ Mandarake]] is about the only online retailer that (a) carries their music and (b) does ship to the U.S.

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