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