Gabriele Ferro, Klaus L. Neumann, Emilia Ravaglia, Domenico Trimarchi, Enzo Dara, Marilyn Schmiege, Alessandro Corbelli, Francisco Araiza, Lucia Valentin-Terrani & Chor Des Westdeutschen Rundfunks
Gabriel Bacquier, Dame Joan Sutherland, Donald Gramm, English Chamber Orchestra, Pilar Lorengar, Marilyn Horne, Leonardo Monreale, Richard Bonynge, The Ambrosian Singers & Werner Krenn
Wiener Singverein, Cornell MacNeil, Eugenia Ratti, Herbert von Karajan, Fernando Corena, Renata Tebaldi, Carlo Bergonzi, Arnold van Mill, Vienna Philharmonic, Giulietta Simionato & Oliviero de Fabritiis