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