Spring Song (in Swedish, Vårsång) is a tone poem composed in 1894 by the Finnish composer Jean Sibelius. The piece was initially composed as Improvisation for Orchestra, in the key of D major. Sibelius recast it in F major, and retitled the work in 1895, appending the subtitle "The Sadness of Spring" to that (unpublished) version, then made final, pre-publication revisions in 1902. The piece contains an optimism that is relatively rare among Sibelius' works. It is known for its prominent use of bells at the end of the song.