Karaoke Mugen provides many collections, choose the ones you are interested in.
Asia (Music from Asian countries (Japan, South Korea, China, etc.)) Geek / Otaku (Anime/Video Games/Internet culture) Kana (Japanese songs with kana karaoke) Shitpost (Everything you do not want in your song library) West (Mainstream songs from around the western world)Aki Hata
(574)Noriyasu Agematsu
(331)ZUN
(310)Saori Kodama
(143)DECO*27
(142)Junko Miyajima
(142)Shôko Fujibayashi
(124)Yuki Kajiura
(117)Kôhei Tanaka
(112)Satoru Kôsaki
(109)Yôko Kanno
(102)Daisuke Kikuta
(99)Chiyomaru Shikura
(98)Junpei Fujita
(86)Kanata Nakamura
(86)Hiroyuki Sawano
(85)Yôhei Matsui
(82)HoneyWorks
(75)ryo (supercell)
(74)Yûho Iwasato
(71)meg rock
(71)Giga-P
(69)Kanaria
(68)Stack
(68)Jun Maeda
(66)Ayase
(65)ZUTOMAYO
(64)Hironobu Kageyama
(61)Hyadain
(60)Natsumi Tadano
(60)atsuko
(58)KATSU
(55)ZAQ
(55)Eve
(54)R・O・N
(54)Shunsuke Kikuchi
(54)Stack Bros.
(54)Rockwell
(53)Sumiyo Mutsumi
(52)Yasushi Akimoto
(52)Ôji Hiroi
(52)Hitoshi Fujima
(51)Shô Watanabe
(51)ARM
(50)Alessandra Valeri-Manera
(50)Ryûtarô Fujinaga
(50)Yuriko Mori
(50)hotaru
(49)KOTOKO
(48)TSUNKU♂
(48)Emi Inaba
(47)Miho Karasawa
(47)Yukinojô Mori
(47)Kyô Takada
(46)Michiaki Watanabe
(46)Numa
(46)Shôji Meguro
(46)Kanata Okajima
(45)Satoshi Yaginuma
(45)Tom-H@ck
(45)Shôko Oomori
(44)Hidetoshi Satô
(43)Shôta Horie
(43)EFFY
(42)Gérard Salesses
(42)Tomokazu Tashiro
(42)Katsuhiko Kurosu
(41)Nobuo Uematsu
(41)Yasutaka Nakata
(41)Hige Driver
(40)Keiichi Okabe
(40)Masayoshi Ooishi
(40)Taku Inoue
(40)Yuki Honda
(40)Masami Okui
(39)Hikaru Utada
(38)RM
(38)Three
(38)Tomoya Tabuchi
(38)Yasuhiro Obata
(38)syudou
(38)Akira Kosemura
(37)Calliope Mori
(37)Erica Masaki
(37)Sayaka Ogawa
(37)Sui Ishida
(37)Takayuki Negishi
(37)Arika Takarano
(36)Daisuke Asakura
(36)Jean-François Porry
(36)TAKE
(36)Yûsuke Katô
(36)Yûsuke Shirato
(36)eba
(36)Kiyomi Kumano
(35)Shin Furuya
(35)Takahiro Yamada
(35)Yasuo Kosugi
(35)Yoshinori Abe
(35)Yû Aku
(35)