Crystal Kay feat.BoA - Girlfriend (Crystal Kay 10th Anniversary Tour CK10)
BoA - UNIVERSE feat.Crystal Kay & VERBAL(m-flo)『Live at Studio Coast』
BoA - UNIVERSE feat. Crystal Kay & VERBAL(m-flo) [BoA 20th Anniversary Special Live -The Greatest-]
Crystal Kay feat. BoA 『Girlfriend - DAGG's Remix』
m-flo loves Crystal Kay / REEEWIND!
Girlfriend
[ENG] Crystal Kay (ft. BoA) - Girlfriend (Live)
the Love bug (2005 LIVE)
CHEMISTRY×Crystal Kay "Two As One" Official Video
Crystal Kay feat. 安室奈美恵 - 「REVOLUTION」Music Video(Short ver.)【好評配信中!】
BoA & Crystal Kay ~ Girlfriend recording
Crystal Kay Live in NHK Hall 10th Anniversary Tour CK10
Believe in LOVE feat.BoA (Acoustic Version)
Crystal Kay & Daichi Yamamoto “Gimme Some” Official Music Video
BoA and Crystal Kay ~ Universe: Sims2 Edition
Crystal kay- Kataomoi ENGSUB [Concert 10th annivesary]
Girlfriend feat.BoA Crystal Kay 姉妹で歌ってみました
Crystal Kay - I know ENGSUB [Concert 10th annivesary.]
Crystal Kay “That Girl” - Prod. ☆Taku Takahashi(m-flo) Official Lyric Video