Publisher Desc.  For the advanced pianist, this etude by Chopin featuring rapid arpeggios and harmonic modulations based on the key of A-flat major was named "Aeolian Harp" by Robert Schumann. The piece consists of a right-hand melody with left-hand accompaniment. The principal melody falls on the fifth finger of the right hand at the beginning of each sextuplet. Occasional polyrhythms are introduced in the accompaniment.