Which Opera has more acts Les vêpres siciliennes and La scala di seta ?
Les vêpres siciliennes: Les vêpres siciliennes ("The Sicilian Vespers") is a grand opéra in five acts by the Italian romantic composer Giuseppe Verdi set to a French libretto by Eugène Scribe and Charles Duveyrier from their work "Le duc d'Albe", which was written in 1838.
i don't know