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