- Rudolf Kolisch, New Friends of Music Orchestra, John Wummer, Amsterdam Strings, Dorothy Chester, John Meisner, Edith Weiss Mann, Otto Klemperer
- Prades Festival Orchestra, Fernando Valenti, Marcel Mule, Lucien Thevet, John Wummer, Gilbert Coursier, Pau Casals, Leila Storch, Isaac Stern, Alexander Schneider, John Mack, Paul Tortelier, Marcel Tabuteau, Maurice Allard
