Founded by percussionist Ichiraku Yoshimitsu, the sound-constructivist improv trio I.S.O. also contains the two users of Filament-samplist Sachiko M. and guitarist/turntablist Otomo Yoshihide. Yoshimitsu was created in Yamaguchi, Japan, in 1959, and elevated in Yamaguchi Town, 900 km from Tokyo. His comparative isolation triggered him to build up in addition to the rest of Japan’s songs scene before ’90s. Starting around 1993, he began collaborating with such performers as violinist Jon Rose, trombonist/composer George Lewis, and several prominent Japanese improvisers, including Haino Keiji and Uchihashi Kazuhisa. I.S.O. was shaped in June 1997 throughout a tour of American Japan. Their initial record, Ju-ryoku Dokei, was documented in Feb 1998. I.S.O. is specially recognized by Yoshimitsu’s performing of his very own homemade electronic musical instruments.