Sherrill Milnes, Carlo Bergonzi, Montserrat Caballé, Georges Prêtre, RCA Italiana Opera Chorus, RCA Italiana Opera Orchestra, Dorothy Krebill, Fernando Iacopucci, Fernando Jacopucci, Gene Boucher, Thomas Jamerson, Harold Enns, Nancy Stokes, Camillo Sforza, Franco Ruta & Flavio Tasin