Question: Who wrote the original play that was inspired by a passion for a Vienne composer, and was the base for the opera Orpheus und Eurydike?
Sentence (from "Alma Mahler"): Alma Maria Mahler Gropius Werfel (born Alma Margaretha Maria Schindler; 31 August 1879 – 11 December 1964) was a Viennese-born composer.
Relevant evidence: Yes