Hirai Ken
Sore Demo Shitai
Ken Hirai
Omoigakasanarusonomaeni
Ken Hirai
Canvas -Piano Version-
Ken Hirai
fake star ~Ken's swingin' jazz~
Ken Hirai
Gaining Through Losing
Ken Hirai
Shiranaindesho?
Ken Hirai
Miss Summertime
Ken Hirai
Ken Hirai 20th Anniversary Mega Mix Vol. 2
Ken Hirai
Boku wa Kimi ni Koi wo Suru