En saga (Finnish title: Satu; sometimes translated to English as A Fairy Tale, A Saga, or A Legend), Op. 9, is a single-movement tone poem for orchestra written in 1891–92 by the Finnish composer Jean Sibelius. The piece, which likely began as a septet or octet for flute, clarinet, and string ensemble before evolving into an orchestral tone poem, premiered on 16 February 1893 in Helsinki with Sibelius conducting the Helsinki Orchestral Society. A decade later in 1902, Sibelius substantially revised En saga in response to an invitation from Ferruccio Busoni to conduct the piece in Berlin; the tone poem thus stands alongside the Lemminkäinen Suite, the Violin Concerto, The Oceanides, and the Fifth Symphony as one of Sibelius' most overhauled works. The Berlin concert, which occurred a fortni