Peter Kowald (21 April 1944 – 21 September 2002) was a German free jazz musician.A member of the Globe Unity Orchestra, and a touring double-bass player, Kowald collaborated with a large number of European free jazz and American free-jazz players during his career, including Peter Brötzmann, Irène Schweizer, Karl Berger, Fred Anderson, Hamid Drake, Karl E. H.