Lucy Malata, Fausta Labia, Clohilde Bressler-Gianoli, Riccardo Stracciari, Georgette Brejean-Silver, Michael Vlachopoulos, Malka Bobkova, Marie Therese de Segur, Giuseppe Bellantoni, Victoria Theodorides, John McCormack, Studio Pianist, Elvino Ventura, Studio Conductor, Rosina Storchio, Eugenia Burzio, Wilhelm Grüning, Maria Farneti, Luisa Bianco-Tamagno, Alfred Galand, Aino Ackté, Jeanne Bourdon, Emilio Perea, Elena Theodorides, Sibyl Seligman, Studio Orchestra