Group Ongaku

グループ・音楽 Group Ongaku ("Music Group") was a collective exploring musical improvisation from 1958 through 1962. It was originally an improvisational duo between Skukou Mzuno and Takehisa Kosugi, who both were studying music at Tokyo National University of Fine Arts and Music. Later, between 1959 and 1960, the group expanded to include Mieko Shiomi, Yasunao Tone (both participants in Fluxus, along with Kosugi), Mikio Tojuma, Genichi Tsuge, and Yumiko Tanno.