Sylvia, originally Sylvia, ou La nymphe de Diane, is a full-length ballet in two or three acts, first choreographed by Louis Mérante to music by Léo Delibes in 1876. Sylvia is a typical classical ballet in many respects, yet it has many interesting features that make it unique. Sylvia is notable for its mythological Arcadian setting, creative choreographies, expansive sets and, above all, its remarkable score.
The ballet's origins are in Tasso's 1573 play Aminta, which provides the basic plot of Delibes' work. Jules Barbier and Baron de Reinach adapted this for the Paris Opera. The piano arrangement was composed in 1876 and the orchestral suite was done in 1880.
When Sylvia premiered on Wednesday, June 14, 1876, at the Palais Garnier, it went largely unnoticed. In fact, the first seven productions of Sylvia were not commercially successful. It was the 1952 revival, choreographed by Sir Frederick Ashton, that popularized the ballet. Ashton's success set the stage for the 1997, 2004, 2005 and 2009 productions, all of which were based on his 1952 choreography.