The Wood Nymph (Swedish title: Skogsrået; subtitled ballade pour l'orchestre), Op. 15, is a programmatic tone poem for orchestra composed in 1894 and 1895 by the Finnish composer Jean Sibelius. The ballade, which premiered on 17 April 1895 in Helsinki, Finland, with Sibelius conducting, follows the Swedish writer Viktor Rydberg's 1882 poem of the same title, in which a young man, Björn, wanders into the forest and is seduced and driven to despair by a skogsrå, or wood nymph. Organizationally, the tone poem consists of four informal sections, each of which corresponds to one of the poem's four stanzas and evokes the mood of a particular episode: first, heroic vigor; second, frenetic activity; third, sensual love; and fourth, inconsolable grief.