Silvio Varviso, Karl Ridderbusch, Jean Cox, Hannelore Bode, Hans Sotin, Anna Reynolds, Klaus Hirte, Chor der Bayreuther Festspiele & Bayreuther Festspielorchester
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