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