Orchestra of the Royal Opera House, Covent Garden, Heinrich Steiner, Rundfunk-Sinfonieorchester Berlin, Lea Piltti, Clemens Krauss, Vienna Philharmonic, Michael Raucheisen, Josef Krips, Isolde Ahlgrimm, Karl Maurer, Rupert Glawitsch, Karl Reznicek, RAI Symphony Orchestra, Turin, Mario Rossi, Rudolf Moralt, Berlin Reichssenders Orchestra, Orchestra del Teatro alla Scala di Milano, Josef Niedermeyer, Walter Hoefermeyer, Irmgard Seefried, Leopold Ludwig, Philharmonia Orchestra, Herbert von Karajan, Elisabeth Schwarzkopf, Wilhelm Furtwängler, Victor de Sabata, Lucerne Festival Orchestra, Peter Klein & Chorus of the Royal Opera House, Covent Garden