ヘルムート・ラッヘンマン
In 1972, with Helmut Lachenmann, he coordinated the Composition Studio at the International Vacation Course for New Music in Darmstadt. He remained Technical Director of the Feedback Studio until 1975, when he moved to Basel to become Director of the Electronic Studio of the Musikakademie there, a post he held until 1985. He now lives in Switzerland.