Chihei Hatakeyama is a member of the computer-oriented electro!acoustic duo Opitope, which is active around Tokyo. Opitope organizes a performance series called 'Radical Mute Geek' in Tokyo and has played at the series with Keiichi Sugimoto (aka Four Colour), TetsuroYasunaga (Cubic Music), Christophe Charles and others. Chihei Hatakeyama is also a member of the improvising group Copa del Papa. Minima Moralia is a product of the careful placement of sound afforded by computer programming combined with the timbres of live performance.