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