Studio Orchestra, Lorenzo Molajoli, Paul Reimers, John McCormack, Milton Katims, RCA Victor Symphony Orchestra, Georges Thill, Stewart Wille, Studio Chorus, G. Tarragó, Dorothy Maynor, Rosario Bourdon, Claudia Muzio, Gladys Swarthout, John Charles Thomas, Rosa Ponselle, Lawrence Tibbett, Richard Crooks, Margarete Matzenauer, Trinity Church Choir, New York, Carroll Hollister, Edwin Schneider, Renata Tarragó, Marcel Journet, Armand Bernard, Hulda Lashanska, Clarence Dickinson, Ernestine Schumann-Heink, Richard Tauber, Henry Geehl, Mogens Woldike, Ladies' Chorus, Giovanni Martinelli, Victoria de los Ángeles, Aksel Schiøtz, Elisabeth Schumann
Marina Koshetz, Robert Merrill, Ferruccio Tagliavini, Armand Tokatyan, Marjorie Lawrence, Donald Voorhees, Howard Barlow, John Charles Thomas, Carol Brice, Pia Tassinari, Ezio Pinza, Richard Crooks
