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