German jazz bassist and musicologist, born in Hamburg, 1957; died 26th October 2003.
Apart from his work as a double bass player, he was also active as a music journalist, radio producer, lecturer at the University of Hamburg and associate professor of jazz history at the Hochschule für Musik und Theater. He has published books on Albert Ayler, Anthony Braxton, Ornette Coleman, Charlie Parker and Sonny Rollins and lastly Hear and Now. Gedanken zur Improvisierten Musik, a book dealing with improvised music in general.