Mikami also acted in cinema and is notable for collaborations with Shūji Terayama and his avant-garde theater Tenjō Sajiki.
Recently he formed the group Sanjah, with folk singer Kan Mikami and drummer Toshi Ishizuka.
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He has played with many underground musicians in Japan, including Chie Mukai (Ché-SHIZU), Kan Mikami (Sanjah), Hiroshi Hasegawa (Astro, C.C.C.C.), Junko (Hijokaidan) and the psychedelic rock group Kousokuya.
Kan Mikami | Wong Kan Seng | Kan | Naoto Kan | Kyōsuke Mikami | Ust-Kan | Toni Kan | Shinji Mikami | Alexander Rinnooy Kan | Yo Kan | Yen Chia-kan | Tao Kan | Ryūkyū-kan | Nan Desu Kan | Kyohei Mikami | Kan Ting Chiu | Kan Kikuchi | Kan'ei | Justin Kan | Dai Kan-Wa Jiten | Daijō-kan | An Thắng, Bắc Kạn |
Yoshizawa collaborated with innumerable musicians over his long career; some of the better known include Masayuki Takayanagi, Masahiko Togashi, Takehisa Kosugi, Mototeru Takagi, Kaoru Abe, Steve Lacy, Dave Burrell, Derek Bailey, Evan Parker, Barre Phillips, Butch Morris, Elliott Sharp, Ikue Mori, Keiji Haino, Kan Mikami, Kazuki Tomokawa, Christopher Yohmei Blasdel & Tenko.