- Giulio Viamonte, Gré Brouwenstijn, Chorus of Teatro Colon, Richard Tucker, Fernando Previtali, Mario Verazzi, Aldo Protti, Guerrino Boschetti, Ruzena Horakova, Orchestra of the Teatro Cólon, Mignon Dunn, Virgilio Tavini, Norman Scott, Victorio Bacciato
