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