July 20 to 25. Amateur participants: 19 groups from Germany, Austria, Czechoslovakia, Spain, France, Hungary, Poland, Sweden and Switzerland. Professional Participants: Barney Bigard, Milt Buckner, "Cozy" Cole William, David "Panama" Francis, Wallace Davenport, Eddie "Lockjaw" Davis, Vic Dickenson, Lloyd "Tiny" Grimes, Earl "Fatha" Hines, Milton Hinton, Claude Hopkins, Albert "Budd" Johnson, Jonathan "Jo" Jones, Arvell Shaw, "Budy" Tate, Eddie "Cleanhead" Vinson, Olive Brown, Charles Mingus, The Stars of Falth of Black Nativity (Frances Steadman, Mathie Harper, Kitty Perham, Sadie Frances Key, Esther Ford, Alfred Haurand, Leo de Ruiter and Jan Huydts) and Spontan Music Ensemble (John Stevens, Derek Bailey, Kent Carter, Roger Smith and Trevor Watts). Winners: It was not competitive.