Which opera has more acts, Riders to the Sea or Lucio Silla?
Riders to the Sea (opera) Riders to the Sea is a short one-act opera by Ralph Vaughan Williams, based on the play of the same name by John Millington Synge. The composer completed the score in 1927, but it was not premiered until 1 December 1937, at the Royal College of Music, London. The opera remained largely the province of students and amateurs until it entered the repertoire of Sadler's Wells in 1953.
Orion (Lacoste) Orion is an opera by the French composer Louis Lacoste, first performed at the Académie Royale de Musique (the Paris Opera) on 17 February 1728. It takes the form of a "tragédie en musique" in a prologue and five acts. The libretto was begun by Joseph de Lafont, and completed after his death by Simon-Joseph Pellegrin. The plot is based on the Greek myth of Orion.