Which opera has more acts, Le prophète or La scala di seta?
Le prophète Le prophète ("The Prophet") is a grand opera in five acts by Giacomo Meyerbeer. The French-language libretto was by Eugène Scribe and Émile Deschamps, after passages from the "Essay on the Manners and Spirit of Nations" by Voltaire. The plot is based on the life of John of Leiden, Anabaptist leader and self-proclaimed "King of Münster" in the 16th century.
Aida Aida (] ) is an opera in four acts by Giuseppe Verdi to an Italian libretto by Antonio Ghislanzoni. Set in Egypt, it was commissioned by and first performed at Cairo's Khedivial Opera House on 24 December 1871; Giovanni Bottesini conducted after Verdi himself withdrew. Today the work holds a central place in the operatic canon, receiving performances every year around the world; at New York's Metropolitan Opera alone, "Aida" has been sung more than 1,100 times since 1886. Ghislanzoni's scheme follows a scenario often attributed to the French Egyptologist Auguste Mariette, but Verdi biographer Mary Jane Phillips-Matz argues that the source is actually Temistocle Solera.