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
(694)ZUN
(364)Noriyasu Agematsu
(342)Junko Miyajima
(223)Saori Kodama
(179)DECO*27
(161)Shôko Fujibayashi
(137)Yuki Kajiura
(131)Yôhei Matsui
(125)Satoru Kôsaki
(119)Daisuke Kikuta
(118)HoneyWorks
(118)Kanata Nakamura
(118)Kôhei Tanaka
(118)Yôko Kanno
(117)Chiyomaru Shikura
(106)Giga
(100)Hiroyuki Sawano
(94)Junpei Fujita
(94)Ayase
(84)Stack
(83)Yûho Iwasato
(82)Kanaria
(79)ZUTOMAYO
(79)ryo (supercell)
(79)meg rock
(77)Eve
(74)Natsumi Tadano
(73)Jun Maeda
(71)EFFY
(68)Numa
(66)Stack Bros.
(66)R・O・N
(65)ZAQ
(65)Rockwell
(64)Hironobu Kageyama
(63)Hyadain
(63)Tom-H@ck
(63)Sumiyo Mutsumi
(62)TAKE
(62)Yasushi Akimoto
(62)atsuko
(62)Kanata Okajima
(60)TeddyLoid
(60)hotaru
(60)KATSU
(59)Shunsuke Kikuchi
(59)Shôta Horie
(59)TRUE
(59)Ryûtarô Fujinaga
(57)Yukinojô Mori
(57)Yuriko Mori
(57)Shô Watanabe
(56)TSUNKU♂
(56)shito
(56)ARM
(55)Erica Masaki
(55)Kôshi Asakawa
(55)Ôji Hiroi
(55)Yuki Honda
(54)Hitoshi Fujima
(53)KOTOKO
(53)Tomokazu Tashiro
(53)Asuka Oda
(52)Kyô Takada
(52)Masayoshi Ooishi
(51)Yasuhiro Obata
(51)Alessandra Valeri-Manera
(50)Ayaka Miyake
(50)Menma
(50)syudô
(50)Emi Inaba
(49)Hige Driver
(49)Jin
(49)Yûsuke Shirato
(49)Keiichi Okabe
(48)Tomoya Tabuchi
(48)Michiaki Watanabe
(47)Shôko Oomori
(47)Taku Inoue
(47)eba
(47)Katsuhiko Kurosu
(46)Satoshi Yaginuma
(46)Shu Kanematsu
(46)Shôji Meguro
(46)Tomoki Kikuya
(46)Yasutaka Nakata
(46)40mP
(45)Takuya Watanabe
(45)Calliope Mori
(44)HOYO-MiX
(44)Hidetoshi Satô
(44)Jorakuji Mio
(44)Kôtarô Odaka
(44)Ayato Shinozaki
(43)Hayato Yamamoto
(43)Hikaru Utada
(43)Masaki Iehara
(43)Yûsuke Katô
(43)Gom
(42)