Frederic Chopin : Prelude No. 15 in Db - the Raindrop

Inspired by Bach's Well-Tempered Clavier, Chopin wrote a set of 24 preludes for piano each in a different major or minor key. This one is knicknamed The Raindrop because of the repeated A-flat or G-sharp note, and is thought to have been composed when Chopin, on doctor's orders, went on holiday to Majorca to enjoy a warm dry climate but experienced days on end of rain. This piece was used in the film "Face/Off" and was used in the adverts for the video game "Halo 3". The complete set of piano preludes by Chopin is available from Sheet Music Plus (US) or The Music Room (UK). Here is a video followed by the sheet music for the piece: