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.
Vincent (opera) Vincent is an opera in three acts by Einojuhani Rautavaara first performed in 1990. The libretto is by the composer, and consists of scenes from the life of the artist Vincent van Gogh, told in retrospect.