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