born March 21, 1940 in Karlsruhe (Germany). Joos studied flugelhorn, trumpet and bass and played also baritone- and alphorn.
In the first half of the 70ies he was member in several Modern- and FreeJazz Bands and played at Festivals as the "Free Jazz Meeting Baden-Baden", The "Free Jazz Day" in Frankfurt and at a Flugelhorn workshop with Kenny Wheeler, Ian Carr, Harry Beckett and Ack van Rooyen. He was also a leader of his own Quartet and Orchestra. The most recognition he got as a member of the "Vienna Art Orchestra". His warm but powerful sound and the romantic impressionistic influence in combination with the affinity of free improvisations makes him to an expressive profile of the European Jazz landscape.