Soggetto Groningen (Olanda) - "Jazz Marathon" - 23 - 25 maggio 1980 Fra i nomi in cartellone: Art Ensemble of Chicago - Anderson, Ray quartet - El Zabar, Kahil and the Ethnic Eritage Ensemble - Ulmer, James Quartet (Murray, David) - Lindberg, John quartet - Rozie Brothers Trio - Billy Bang and Morris, Butch Ensemble - Pope, Odean and the Saxophone Choir
