Beniamino Gigli, Josef A. Pasternack, Josef Pasternack Orchestra, Nathaniel Shilkret, Nathaniel Shilkret and His Orchestra, Rosario Bourdon, Studio Orchestra, Rosario Bourdon and His Orchestra, John Barbirolli Orchestra, Sir John Barbirolli, Franco Ghione, Milan La Scala Orchestra, Staatskapelle Berlin, Bruno Seidler-Winkler, Dino Olivieri, Walter Goehr, Lawrence Collingwood, Luigi Ricci, Milan Chamber Orchestra & Rainaldo Zamboni
NBC Symphony Orchestra, Robert Merrill, Arturo Toscanini, Arthur Newman, Johanne Morland, Maxine Stellman, John Garris, Paul Dennis, Licia Albanese, George Cehanovsky & Jan Peerce
Giacomo Lauri-Volpi, The Metropolitan Opera, Professori d'Orchestra Del Teatro Alla Scala, Grande Orchestra, Rosario Bourdon, Giulio Setti & Franco Ghione\Mario Cordone
Alberto Erede, Renata Tebaldi, Swiss Romande Orchestra, RAI Symphony Orchestra, Milan, Nino Sanzogno, Orchestra del Teatro alla Scala di Milano, Arturo Toscanini, Arturo Simonetto, Carlo Bergonzi, Mario del Monaco, Dimitri Mitropoulos, Fiorentino Maggio Musicale Orchestra, Silvio Maionica, Hans Beirer, Karl Böhm, San Carlo Theatre Orchestra, Gaetano Merola, San Francisco Opera Orchestra, Giuseppe di Stefano, Carlo Maria Giulini & RAI Symphony Orchestra Rome