Susumu Hirasawa (平沢進 Hirasawa Susumu, born April 2, 1954 in Tokyo, Kantō region) is a Japanese electronic artist and composer. In 1965, he started playing guitar, inspired by The Ventures, he joined a band with "older people" the following year. In 1972, he enrolled at Tokyo Designer Gakuin College. From 1972 to 1978, he performed in his first band Mandrake, a progressive rock/experimental group influenced by King Crimson, Yes, Black Sabbath and Pink Floyd.

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