- Forbes Robinson, Noreen Berry, Rafael Kubelík, Raymond Nilsson, Marian Nowakowski, Orchestra of the Royal Opera House, Otakar Kraus, Ramón Vinay, Michael Langdon, John Lanigan, Gré Brouwenstijn
- Aldo Protti, Guerrino Boschetti, Ruzena Horakova, Norman Scott, Victorio Bacciato, Chorus of Teatro Colon, Richard Tucker, Mario Verazzi, Virgilio Tavini, Giulio Viamonte, Orchestra of the Teatro Cólon, Gré Brouwenstijn, Fernando Previtali, Mignon Dunn