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