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