- Jussi Björling, Robert Merrill, Enrico Caruso, Joan Hammond, Lawrence Tibbett, Lily Pons, Marian Anderson, Luisa Tetrazzini, Heddle Nash, Beniamino Gigli & Titta Ruffo
- Rosa Ponselle & Charles Hackett
- Alessandro Bonci, Giuseppe Anselmi, Lina Cavalieri, John McCormack, Rosa Ponselle, Giovanni Zentella, Maria Sammarca, Ferdinand Ansseaau, Mattia Battistini, Claudia Muzio, Enrico Caruso, Elisabeth Rethberg, Richard Tauber, Rosa Raisa, Aureliano Pertile, Emmy Destinn, Alfred Piccaver, Florence Easton, Antonio Cortis, Dmitri Smirnov, Anne Roselle & Giovanni Martinelli
- Richard Mayr & Victor Maurel
- Studio Orchestra, Beniamino Gigli, Rosario Bourdon, Josef A. Pasternack, Josef Pasternack Orchestra, Titta Ruffo, Giuseppe De Luca, Giulio Setti, Ezio Pinza, amelita Galli-Curci, Louise Homer, Angelo Bada, Bruno Reibold & Elisabeth Rethberg
- Tito Schipa & Toti Dal Monte