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