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