- Eva Gustavson, NBC Symphony Orchestra, Richard Tucker, Arturo Toscanini, Herva Nelli, Giuseppe Valdengo
- Carlo Bergonzi, Norman Scott, Marie Janger, Robert Nagy, Dimitri Mitropoulos, Ezio Flagello, Frank Guarrera, The Metropolitan Opera Orchestra, Zinka Milanov, Giorgio Tozzi
- Aldo Protti, Guerrino Boschetti, Ruzena Horakova, Giulio Viamonte, Victorio Bacciato, Gré Brouwenstijn, Fernando Previtali, Virgilio Tavini, Orchestra of the Teatro Cólon, Mario Verazzi, Richard Tucker, Chorus of Teatro Colon, Mignon Dunn, Norman Scott
- Norman Scott, Gertrud Grob-Prandl, Orchestra del Teatro La Fenice di Venezia, Franco Capuana, Renata Ferrari-Ongara, Antonio Spruzzola-Zola
- Leonard Warren, George Cehanovsky, Mildred Allen, Louis Sgarro, Calvin Marsh, Roberta Peters, Eugenio Fernandi, Thelma Votipka, The Metropolitan Opera Orchestra, Fausto Cleva, Madelaine Chambers, Margaret Roggero, William Wilderman, Norman Scott, Gabor Carelli
- Aldo Protti, Lucille Udovich, Carlo Felice Cillario, Luisa Bartoletti, Flaviano Labò, Tullio Gagliardo, Mignon Dunn, Italo Pasini, Norman Scott
- Norman Scott, Irene Dalis, Georg Solti, Leonie Rysanek, Mildred Allen, Hans Hopf, Robert Nagy, Hermann Prey, Marko Rothmüller, The Metropolitan Opera Orchestra, Paul Franke