Elizabeth Harwood, Michel Sénéchal, Mirella Freni, Luciano Pavarotti, Nicolai Ghiaurov, Rolando Panerai, Gianni Maffeo, Schonberger Sangerknaben, Chor der Deutschen Oper Berlin, Berliner Philharmoniker and Herbert von Karajan: albümler, şarkılar, konserler