Francesca Gaetana Cosima Wagner was the daughter of the Hungarian composer and pianist Franz Liszt and Franco-German romantic author Marie d'Agoult. She became the second wife of the German composer Richard Wagner, and with him founded the Bayreuth Festival as a showcase for his stage works; after his death she devoted the rest of her life to the promotion of his music and philosophy. Commentators have recognised Cosima as the principal inspiration for Wagner's later works, particularly Parsifal.

Franz Liszt was a Hungarian composer, virtuoso pianist, conductor and teacher of the Romantic period. With a diverse body of work spanning more than six decades, he is considered to be one of the most prolific and influential composers of his era, and his piano works continue to be widely performed and recorded.