I've no informations about Hirokazu Yamada. But Motoharu Yoshizawa and Mototeru Takagi are founding-fathers of japanese Free Music. My thanks goes to Nick for this and the music from the post below (Kosugi solo).
HIROKAZU YAMADA “KOZAN”
Hirokazu Yamada, guitar
Motoharu Yoshizawa, double bass
Mototeru Takagi, tenor saxophone
A1. Dedicated To Michio Miyagi 09:02
A2. Titan 08:41
A3. A Dialectic Apple In The Existence 03:51
B1. Stoic Monument 06:44
B2. Solitary Promenade 07:44
B3. Fin De Siecle 03:15
Recorded on October 31, 1985.
TIARA COMPANY - Tiara 001, 1986.