Question: A Bayou Legend is an American opera composed by William Grant Still, was an American composer, who composed more than 150 works, including five symphonies and eight operas, with a libretto by his wife and frequent collaborator, who?
Sentence (from "A Bayou Legend"): A Bayou Legend is an American opera composed by William Grant Still, with a libretto by his wife and frequent collaborator, Verna Arvey.
Relevant evidence: Yes