Masquerade (Danish: Maskarade) is an opera in three acts by Carl Nielsen to a Danish libretto by Wilhelm Andersen, based on the comedy by Ludvig Holberg. First performance: Royal Theatre, Copenhagen, 1906. The foyer of Charles Garniers Opéra, Paris, opened 1875 Opera is an art form consisting of a dramatic stage performance set to music. ... Carl August Nielsen (June 9, 1865–October 3, 1931) was a Danish composer. ... A libretto is the body of words used in an extended musical work such as an opera, operetta, oratorio, or musical. ... Ludvig Holberg Ludvig Holberg, Baron of Holberg (December 3, 1684 - January 28, 1754), Norwegian-Danish dramatist, historian, and essayist. ... City nickname: none Location in Denmark Area  - Total  - Water 526 km² xxx km² xx% Population  - City (2004)  - Metropolitan  - Density 502,204 1,116,979 954/km2 [including water] xxx/km2 [land only] Time zone Eastern: UTC+1 Latitude Longitude 55°43 N 12°34 E Copenhagen (Danish: København) is... 1906 was a common year starting on Monday (see link for calendar). ...

The plot revolves around Leander and Leonora, two young persons who meet fortuitously at a masquerade ball, swear their undying love for each other and exchange rings. The following day, Leander tells a servant of his newfound love. He soon becomes distraught when informed by the servant that his parents have betrothed him in marriage to a neighbor's daughter. Things get complicated when Leonard, the neighbor whose daughter is the other part of the previously unknown arrangement, comes complaining to Leander's father that his daughter is in love with someone she met at the masquerade last night. In the third act, all is resolved when the various parties slip off to the night's masquerade, where all is revealed to everyone's mutual satisfaction.