Chopin wrote the Op. 28 preludes between 1835 and 1839,
partly at Valldemossa, Majorca, where the composer
spent the winter of 1838-39 and where he had fled with
George Sand and her children to escape the damp Paris
weather.
Prelude No. 4 "Suffocation" is one of the most famous
pieces Chopin wrote. It was played at his funeral, with
a slow melody in the right hand and repeated block
chords in the left hand (Source : Wikipedia)