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