JO, Wolfgang Windgassen, Jörg Demus, Jussi Björling, Nikolaus Hubner, Annelies Kupper, Gunter Breitenbach, Hermann Uhde, Dietrich Fischer-Dieskau, Eleanor Steber, Willi Boskovsky, WDR Symphony Orchestra Cologne, Gerald Moore, Johann Krump, Hans Braun, Bayreuth Festival Orchestra, Frederick Schauwecker, Sir Clifford Curzon, Joseph Keilberth
