Between Pelléas et Mélisande and Riders to the Sea, which one has more acts?
Pelléas et Mélisande (opera): Pelléas et Mélisande ("Pelléas and Mélisande") is an opera in five acts with music by Claude Debussy. 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.
Pelléas et Mélisande