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)Miku Hatsune
(351)Nana Mizuki
(143)Yôko Hikasa
(114)Aoi Yûki
(106)Yoshino Nanjô
(105)Suzuko Mimori
(101)Ayahi Takagaki
(99)Suisei Hoshimachi
(93)Ai Kayano
(87)Rin Kagamine
(82)Kana Hanazawa
(81)Stack
(80)Len Kagamine
(77)Tomori Kusunoki
(75)Sayuri Date
(74)Ai Furihata
(73)Aika Kobayashi
(73)Hinata Satô
(73)Inori Minase
(73)Aina Suzuki
(72)Yuka Iguchi
(72)Ichirô Mizuki
(71)Liyû
(71)ACA-Ne
(70)Yui Ogura
(70)Kanako Itô
(69)Rikako Aida
(67)Yui Horie
(66)Moeka Koizumi
(65)Shuka Saitô
(65)Haruka Tomatsu
(64)Megumi Hayashibara
(64)Naomi Payton
(64)JAM Project
(63)Nagisa Aoyama
(63)Nako Misaki
(62)Ado
(61)Akari Kitô
(61)Hironobu Kageyama
(61)Saori Hayami
(61)Sumire Uesaka
(61)Toshiyuki Toyonaga
(61)Aya Hirano
(58)Miyu Kubota
(58)Anju Inami
(57)Minako Kotobuki
(57)GUMI
(56)angela
(56)Kento Itô
(55)Aimer
(54)Calliope Mori
(54)Aki Toyosaki
(53)Kana Asumi
(52)Minori Chihara
(52)Nagi Yanagi
(52)Ayana Taketatsu
(51)Nanaka Suwa
(51)Kaori Maeda
(50)Manami Numakura
(50)Aya Uchida
(49)Ayane Sakura
(49)Sora Tokui
(49)Asami Imai
(48)Machico
(48)Marine Hôshô
(48)Minami Kuribayashi
(48)Rie Takahashi
(48)Kanako Takatsuki
(47)Maaya Sakamoto
(47)Rie Kugimiya
(47)Aguri Oonishi
(46)Arisa Komiya
(46)Nirei Nozomi
(44)Ayaka Oohashi
(43)Nina Hanamiya
(43)Aimi
(42)Maaya Uchida
(42)Masaaki Endô
(42)Isao Sasaki
(41)Koorogi '73
(41)Megumi Nakajima
(41)Nao Tôyama
(41)Yû Serizawa
(41)Aina Aiba
(40)Akina
(40)Emi Nitta
(40)Kokona Nonaka
(40)LiSA
(40)May'n
(40)Pile
(40)Yurika Kubo
(40)Haruki Iwata
(39)Marina Inoue
(39)Miyuki Sawashiro
(39)Satomi Satô
(39)Yukari Tamura
(39)Luka Megurine
(38)Maria Sashide
(38)Mayu Sagara
(38)Natsuki Hanae
(38)