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