2003 - 11 tracks

Ken's Bar - Ken Hirai

2003 - 12 tracks

Life Is... - Ken Hirai

2002 - 4 tracks

大きな古時計/ Ooki na Furudokei - Ken Hirai

2002 - 4 tracks

Ooki Na Furudokei - Ken Hirai

2001 - 12 tracks

gaining through losing - Ken Hirai

2000 - 11 tracks

The Changing Same - Ken Hirai

1996 - 12 tracks

Stare At - Ken Hirai

1995 - 11 tracks

un-balanced - Ken Hirai