Between "The Devil and Kate" and "Martha" which has more acts?
Martha (opera) Martha, oder Der Markt zu Richmond ("Martha, or The Market at Richmond") is a "romantic comic" opera in four acts by Friedrich von Flotow set to a German libretto by Friedrich Wilhelm Riese and based on a story by Jules-Henri Vernoy de Saint-Georges.
Pique Dame (Suppé) Pique Dame ("The Queen of Spades") is an operetta in two acts by Franz von Suppé to a German-language libretto very loosely based on Alexander Pushkin's short story "The Queen of Spades". The author of the libretto is unknown. "Pique Dame" was a revised version of Suppé's 1862 operetta "Die Kartenschlägerin" ("The Fortune Teller") and premiered in June 1864 at the Thalia Theater in Graz. The work is primarily known today for its overture which remains a popular concert piece.