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