Watch FMovies. When two goddesses vie for his allegiance, a Roman general is faced with a thorny dilemma. But then his dead forefathers arrive to help make up his mind. Based on a book by Cicero, Mozart’s dramatic serenade was written at age 15 and neglected for the next two hundred years. With this subversive, dreamlike production, Teatro La Fenice’s offers a rare opportunity to discover one of Mozart’s lesser-known works.