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