sentences:  In 1971 he became a founding member of the Oeldorf Group of composers and performers, as well as beginning work at the Centre Européen pour la Recherche Musicale in Metz, at IRCAM in Paris, and at the ZKM, Zentrum für Kunst und Medientechnologie in Karlsruhe .He has taught in Metz, Stuttgart, Basel, Quito, and Győr, amongst other places.From 1990 to 2004 he was Professor of Electronic Music at the Musikhochschule of Freiburg im Breisgau, the town where he has lived since 1996.