July 21-25. Amateur entrants: 19 groups from Germany, Austria, Belgium, Czechoslovakia, Spain, France, England, Sweden, and Switzerland. Professional entrants: Archipel, Clarence "Gatemouth" Brown, Milt Buckner, Al Casey, Arnett Cobb, Paul Gunther, Helen Humes, Candy Johnson, Roland Lobligeois, Jay Mac Shann, Michael Silva, Jimmy Slide, Benny Waters, and Clark Terry. Winners: 1. Maggie's Blue Five (Sweden), Traditional. 1. Elaoin (Switzerland), Modern. 1. Formation (Switzerland), Free. Best Soloist: Tomas Ormberg, saxophone, Maggie's Blue Five (Sweden) and Urs Voerkel, pianist, Formation (Switzerland).