Chopin wrote his 24 Preludes, Op. 28, one in each major and minor key, and completed the set in 1838-1839, partly during a winter in Majorca with the writer George Sand. They were published in 1839. Like Bach's Well-Tempered Clavier, which Chopin revered, the collection works its way through all the keys.
The E minor prelude is one of the shortest and saddest of the set: a slow melody over left-hand chords that change one note at a time, sliding down by half steps. Bar 12, where the melody suddenly moves, closes the first half; the second half starts the same way, then grows to a short outburst before fading out. The prelude was played on the organ at Chopin's own funeral, at the Madeleine church in Paris in October 1849.
This transcription: Chopin, 24 Préludes, Op. 28 (1839), No. 4 in E minor, upbeat and bars 1-12: the melody as printed (grace note in bar 11 left out), the repeated left-hand chords held as block chords: Préludes, ed. Raoul Pugno (Vienna: Universal Edition, UE 348a), p. 7 - archive.org 31761086240850, page n12.
Transcribed by GOONS Studio from the original work, which is in the public domain.