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