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