"Group ONGAKU, founded mainly by students at Tokyo National University of Fine Art & Music, was the 1st collective musical improvisation group. The group began their activities in 1958, & from the naming of the group in 1960 onward continued until somewhere around 1962. They attempted to create acoustics corresponding to actual time & space by means of collective improvisation. Although methodically different, the music that they pursued incidentally shared common directions with contemporaries …