- Titta Ruffo, Francesco Tamagno, Pasquale Amato, Giuseppe Anselmi, Rosa Ponselle, Lawrence Tibbett, Rolando Panerai, Hipolito Lazaro, Celestina Boninsegna, Enrico Caruso, Alfred Piccaver, Helge Roswange, Leon Escalais, Aureliano Pertile, Mattia Battistini, Fernando de Lucia, Giovanni Zenatello, Claudia Muzio, Jose Mardones
- Irra Petina, Arnlod Gabor, George Rasely, Vina Bovy, Lawrence Tibbett, Louis D'Angelo, Norman Cordon, René Maison, Maurice Abravanel, Angelo Bada, The Metropolitan Opera Chorus, The Metropolitan Opera Orchestra, Wilfred Engelmann
- Anne Roselle, Charles Hackett, Anna Case, Margherita Grandi, Studio Pianist, Studio Conductor, Lawrence Tibbett, Richard Crooks, Tino Pattiera, Studio ensemble, Lauritz Melchior, Studio Orchestra, Alberto Erede, Dino Borgioli, Giuseppe de Luca, Jan Peerce, Lionel Barrymore
