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