Which opera has more acts, Riders to the Sea or Lucio Silla?
Lucio Silla Lucio Silla (pronounced , ] ), K. 135, is an Italian opera in three acts composed by Wolfgang Amadeus Mozart. The libretto was written by Giovanni de Gamerra.
Tolomeo Tolomeo, re d'Egitto ("Ptolemy, King of Egypt", HWV 25) is an opera seria in three acts by George Frideric Handel to an Italian text by Nicola Francesco Haym, adapted from Carlo Sigismondo Capece's "Tolomeo et Alessandro".