2012 - 2 tracks

Kyoukaisen-Jou no Horizon Bonus CD 7 - Various Artists

2012 - 9 tracks

METAL GEAR 25th ANNIVERSARY METAL GEAR MUSIC COLLECTION - Various Artists

2005 - 25 tracks

Ramune Original Soundtrack CD2 - Various Artists

2012 - 22 tracks

TARI TARI Music Album ~Utattari, Kanadetari~ CD2 - Various Artists

2012 - 4 tracks

Sword Art Online Bonus Disc 2 - Various Artists

2015 - 14 tracks

RAM WIRE BEST - RAM WIRE

2015 - 19 tracks

ONE MINUTE OLDER - Virgin Babylon Records 5th Anniversary CD1 - Various Artists

2000 - 4 tracks

melody - ЯK Standard, KOKIA

2000 - 4 tracks

goes on forever - ЯK Standard, KOKIA

2010 - 14 tracks

Musique a la Carte (DVD with Special Edition / 2010-Year Limited production) - KOKIA

1999 - 11 tracks

songbird - KOKIA

2015 - 3 tracks

Catch Me If You Can (Japanese) - SNSD