Margaret Matzenauer was an Austria-Hungary-born, later resident in the United States, mezzo-soprano. She had an opulent timbre and wide range. She performed key works from both the Italian and German operatic repertoires in Europe and the United States.

Parsifal is a music drama in three acts by the German composer Richard Wagner and his last composition. Wagner's own libretto for the work is freely based on the 13th-century Middle High German chivalric romance Parzival of the Minnesänger Wolfram von Eschenbach and the Old French chivalric romance Perceval ou le Conte du Graal by the 12th-century trouvère Chrétien de Troyes, recounting different accounts of the story of the Arthurian knight Parzival (Percival) and his spiritual quest for the Holy Grail.