ALBUMS
Jazz Battle Royal
Jazz Battle Royal
1995, CD, Album, Paddle Wheel
Masahiko Osaka & Tomonao Hara Quintet
Favorites For Lovers
1995, CD, Album, Paddle Wheel
Masahiko Osaka & Tomonao Hara Quintet
Favorites
1995, CD, Album, Paddle Wheel, 
Masahiko Osaka & Tomonao Hara Quintet
Dawn Breaks
1993, CD, Album, Paddle Wheel, Paddle Wheel
APPEARANCES +
Nobody Knows*
Nobody Knows 3
2003,
Nobodyknows+
以来絶頂
2003
Continued In The UnderGround Jazz Orchestra
Use Us
2002, CD, Album, Cool Labo
Continued In The UnderGround Jazz Orchestra
Continued In The UnderGround Jazz Orchestra
1999, CD, Album, CUG Records
Various
The Jazz Restoration In Japan Vol.2 = 日本ジャズ維新 地の巻
1996, CD, Comp, Paddle Wheel,
Masahiko Osaka
Twelve Colors
1995, CD, Album, Paddle Wheel
大坂昌彦 & 原朋直クインテット*
def
1994
Toshiyuki Miyama & His New Herd*
Beat Generation
1994, CD, ,
, Big Band
