27, titled Song of the Night, is a work for chorus and orchestra, with a solo part for tenor voice, by Karol Szymanowski.
Its sung text is a poem by 13th-century Persian mystic Jalal ud-Din Rumi as translated into Polish by Tadeusz Miciński, a friend of the composer; it celebrates the beauty of the Eastern night.
Although an instrumental version of the symphony was played in London in 1921, the full world premiere with chorus and tenor soloist came only 3 February 1928 in Lwów.
[2][3] The symphony is influenced by Richard Wagner's Tristan and Isolde and Szymanowski derives from Frédéric Chopin's use of chromatic harmony as in his nocturnes to depict the character of night.
A prominent feature of the work is the composer's formation of unique melodic voices moving independently of one another, in a manner which can be described as 'interwoven polymelody'.