Hidetoshi Koizumi began making music in 1995. The sounds that he expresses come from his observations of the world he lives in, creating an original ambient sound-scape progression that moves from a delicate whisper to noise. He frequently performs live in a variety of venues in his native Japan. After renaming to his real name Hidetoshi Koizumi, he released the first 12-song album "signal" on June 10, 2022.