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