• Can't Stop Me - Crystal Kay・Kanata Okajima - 2018-06-13
• Summer Fever - Crystal Kay・Kanata Okajima - 2018-06-13
• I Just Wanna Fly - Crystal Kay・Kanata Okajima - 2018-06-13
• T-REX feat. Crystal Kay, CRAZYBOY, ANARCHY - Crystal Kay・SAKURA・CRAZYBOY・ANARCHY - 2017-08-02
• Silent Goodbye - Crystal Kay・Carlos K. - 2016-09-14
• 何度でも - Crystal Kay・UTA - 2016-07-27
• Waiting For You - Crystal Kay・UTA - 2016-03-23
• 何度でも - Crystal Kay・UTA - 2015-12-16
• 君と二人なら - Crystal Kay・Carlos K. - 2015-12-16
• I'm Beautiful - Crystal Kay・Matt Cab・RYUJA - 2015-12-16
• Everlasting - Crystal Kay・UTA - 2015-12-16
• #HEARTMELT - Crystal Kay・UTA - 2015-12-16
• Come Back To Me - Crystal Kay・Anne Judith Wik・Ronny Svendsen・Nermin Harambasic・Robin Jenssen - 2012-06-27
• 今夜は No.1 - Crystal Kay・Oddity - 2010-12-08
• I pray - Crystal Kay - 2010-06-16
• Over and Over - Crystal Kay・☆Taku Takahashi - 2009-09-02
• Anytime - CRYSTAL KAY・SHIN KONO - 2007-06-20