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