July 24-27. Amateur participants: 28 groups from Germany, Belgium, Czechoslovakia, Spain, France, England, Poland, Sweden, and Switzerland. Professional participants: John Lee Hoocker, Milt Buckner, Eddie Taylor, Blues Band, Jo Jones, Chris Ib ez, Buddy Tate, and Dany Doritz. Winners: 1. Marc Allbert (France), Classical. 1. Jazz Q-Praha (Czechoslovakia), Modern. Best soloist: Kurt Jarnberg (Sweden). Popularity: The Paradox (Poland).