- Daniel Guss, Mario Sereni, Oliviero de Fabritiis, Leontyne Price, Thomas Schippers, Robert El Hage, Júlia Hamari, Ezio Flagello, Fernando Iacopucci, Francesco Molinari-Pradelli, John Newton, RCA Italiana Opera Chorus, Laura Londi, Corinne Vozza, Giorgio Tozzi, Orchestra of the Rome Opera House, RCA Italiana Opera Orchestra, Reri Grist, Shirley Verrett, Robert Merrill, Erich Leinsdorf, Arturo Basile, Hartje Mueller, Carlo Bergonzi
