Geinoh Yamashirogumi (Japanese: 芸能山城組, Geinō Yamashirogumi) is a Japanese musical collective founded on January 19, 1974 by Tsutomu Ōhashi, consisting of hundreds of people from all walks of life: journalists, doctors, engineers, students, businessmen, etc.
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For example, in the 1980s, MIDI digital synthesizers could not handle the tuning systems of traditional gamelan music, so the group had to teach themselves how to program in order to modify their equipment.