- Carlo Bergonzi
- Victoria de los Ángeles, Mario del Monaco, Leonard Warren, Fausto Cleva & The Metropolitan Opera
- Dame Joan Sutherland
- Montserrat Caballé
- Giuseppe Modesti, Thomas Schippers, Tullio Serafin, Zubin Mehta, Alain Lombard, Franco Ferraris, Gabriele Santini & Franco Corelli
- Renata Scotto
- Angela Gheorghiu