Peter Kowald

Peter Kowald (21 April 1944 – 21 September 2002) was a German free jazz and free improvising double bassist and tubist.
A member of the Globe Unity Orchestra, and a touring double-bass player, Kowald collaborated with many 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. Seigfried, Conny Bauer, Jeffrey Morgan, Wadada Leo Smith, Günter Sommer, William Parker, Barre Phillips, Joëlle Léandre, Alfred Harth,... plus