Which opera Ernani and Stiffelio.has more acts ?
Ernani: Ernani is an operatic "dramma lirico" in four acts by Giuseppe Verdi to an Italian libretto by Francesco Maria Piave, based on the play "Hernani" by Victor Hugo. Stiffelio: Stiffelio is an opera in three acts by Giuseppe Verdi, from an Italian libretto by Francesco Maria Piave.
Ernani