Bruno Walter, The Occidental College Concert Choir, Ernst Haefliger, Columbia Symphony Orchestra, Westminster Choir, Mack Harrell, Arnold Michaelis, David Lloyd, Desi Halban, John Finley Williamson, Mildred Miller, Frances Yeend, Maureen Forrester, Martha Lipton, New York Philharmonic & Emilia Cundari
Gabriele Ferro, Klaus L. Neumann, Emilia Ravaglia, Domenico Trimarchi, Enzo Dara, Marilyn Schmiege, Alessandro Corbelli, Francisco Araiza, Lucia Valentin-Terrani & Chor Des Westdeutschen Rundfunks
