Studio Chorus, Lawrence Tibbett, Studio Orchestra, Studio Pianist, Alexander Smallens, Stewart Wille, Wilfrid Pelletier, The Metropolitan Opera Orchestra, Richard Crooks, Mark Andrews, Kirsten Flagstad, Lauritz Melchior, Karin Branzell, Eugene Goosens, George Cehanovsky, John Engelman, Giovanni Paltrinieri, Gennaro Papi, Nicholas Massue, Ettore Panizza, Artur Bodanzky, Susanne Clemens, Gabor, Wolfe, Alfred Newman, Earl Covert & Zaruhi Elmassion