Jean Sibelius's Symphony No. 6 in D minor, Op. 104, was completed in 1923. Although the symphony is usually described as being "in D minor" the score does not contain a key attribution. Much of the symphony is in fact in the (modern) Dorian mode.
The Sixth has been called "the Cinderella of the seven symphonies" by musicologist Gerald Abraham. Sibelius wrote in 1943 that "the sixth symphony always reminds me of the scent of the first snow". In a remark published in 1955 he said "Rage and passion ... are utterly essential in it, but it is supported by undercurrents deep under the surface of the music".