Hans Koller Free Sound专辑介绍：Recorded at Tonstudio Zuckerfabrik, July 15-17, 1978. Baritone Saxophone, Bass Clarinet – Ronnie Ross Bass – Jürgen Wuchner Drums – Thomas Cremer Sopranino Saxophone, Soprano Saxophone, Tenor Saxophone, Bass Clarinet – Hans Koller Trumpet, Flugelhorn – Herbert Joos