Anataninaritakatta
Những Bài Hát Hay Nhất Của Ken Hirai
Ken Hirai Singles Best Collection UtaBakaTwo
Miracles
SENTIMENTALovers
Ken Hirai 10th Anniversary Complete Single Collection '95-'05 Utabaka
Ken Hirai 15th Anniversary c/w Collection '95-'10 "Ura Utabaka"
THE STILL LIFE
