NBC Symphony Orchestra, Robert Merrill, Arturo Toscanini, Arthur Newman, Johanne Morland, Maxine Stellman, John Garris, Paul Dennis, Licia Albanese, George Cehanovsky & Jan Peerce
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
Carlo Galeffi, Mario Ancona, Enrico Molinari, Alexander Sved, Titta Ruffo, Pasquale Amato, Pavel Lisitsian, Giuseppe De Luca, Riccardo Stracciari, Heinrich Schlusnus, Joseph Schwarz, Lawrence Tibbett, Carlo Tagliabue, Leonard Warren, Mattia Battistini, Cesare Formichi, Giuseppe Danise, Victor Maurel, Antonio Scotti, Antonio Magini-Coletti & Elisa Petri