Who was the son in law of Franz Liszt?
Cosima Wagner (born Francesca Gaetana Cosima Liszt; 1837-1930) was the illegitimate daughter of the Hungarian pianist and composer Franz Liszt and 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.
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Foo Fighters is a well known rock band. What does "Foo Fighters" mean?