I forgot some artists! XDDD
Ayumi Hamasaki: Depend on you (My brother's fault! 
)
Koda Kumi : Real Emotion
ayaka : Okaeri
Namie Amuro : COME
Ai Otsuka: SUPERMAN (lol)
Utada Hikaru: Wait & See ~RISK~
T.M.Revolution: Heart of Sword
YUI: How crazy
alan: Ashita e no Sanka
Leah Dizon: Koi no Shiyou
AAA: Bomb A Head! (Strange, huh? A cover of m.c. A.T's song got me into them)
B'z: HOME
GIRL NEXT DOOR: Guuzen no Kakuritsu
Hitomi Shimatani: ANGELUS
Meisa Kuroki- SHOCK -Unmei- (I still say that it sounds like Shine more by Namie Amuro! XDD)