Question: Ben Moore, is an American composer whose works include art song, musical theatre, cabaret, chamber music, choral music and opera, his song cycles include which song, commissioned by the Marilyn Horne Foundation, Horne was an American mezzo-soprano opera singer?
Sentence (from "Marilyn Horne"): Marilyn Horne (born January 16, 1934) is an American mezzo-soprano opera singer.
Relevant evidence: Yes