- Karl Liebl, Alois Pernerstorfer, Eberhard Wächter, Orchestra Sinfonica Di Roma Della RAI, Herta Wilfert, Gré Brouwenstijn, Dezsö Ernster, Murray Dickie, Artur Rodziński
- Rafael Kubelík, John Lanigan, Raymond Nilsson, Gré Brouwenstijn, Forbes Robinson, Noreen Berry, Orchestra of the Royal Opera House, Otakar Kraus, Ramón Vinay, Michael Langdon, Marian Nowakowski
- Aldo Protti, Guerrino Boschetti, Ruzena Horakova, Giulio Viamonte, Victorio Bacciato, Gré Brouwenstijn, Fernando Previtali, Virgilio Tavini, Orchestra of the Teatro Cólon, Mario Verazzi, Richard Tucker, Chorus of Teatro Colon, Mignon Dunn, Norman Scott