Binding : Audio CD, Label : Documents (Membran), Publisher : Documents (Membran), NumberOfDiscs : 10, Format : Box-Set, medium : Audio CD, releaseDate : 2013-09-02, artists : Astrid Varnay, Wolfgang Windgassen, Hans Hotter, composers : Richard Wagner, Giuseppe Verdi, Beethoven, Ludwig Van, conductors : Karajan, Herbert Von, Leopold Ludwig, Eugen Jochum, Hans Knappertsbusch