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