Pelléas et Mélisande is an opera in five acts with music by the French composer Claude Debussy. The French-language libretto was adapted from Maurice Maeterlinck's symbolist play Pelléas and Mélisande. The plot concerns a love triangle between Prince Golaud, Mélisande (a mysterious young woman he had found lost in a forest), and Golaud's younger half-brother Pelléas. The only opera Debussy ever completed, Pelléas et Mélisande premiered on 30 April 1902 at the Salle Favart in Paris, performed by the Opéra-Comique, with Jean Périer as Pelléas and Mary Garden as Mélisande. The premiere was conducted by André Messager, who was instrumental in getting the Opéra-Comique to stage the work. This poster by the French painter Georges Rochegrosse was produced for the premiere.Poster credit: Georges Rochegrosse; restored by Adam Cuerden