 From 1975 to 1977 he led the group Clarinet Contrast, consisting only of clarinets, with Perry Robinson, Hans Kumpf, Bernd Konrad and Michel Pilz.At the end of the 1970s he was leader of one of West Germany's best-known jazz groups.At the beginning of the 1980s he took part in a Clarinet Summit (which was created by Joachim E. Berendt and himself) with John Carter, Perry Robinson, Gianluigi Trovesi and others.