piano. Etude a minor op. 10,2 - Etude A flat major op. 10,10 - Etude C major op. 10,1 - Etude C major op. 10,7 - Etude C minor op. 10,12 Revolution - Etude c sharp minor op. 10,4 - Etude E major op. 10,3 - Etude E flat major op. 10,11 - Etude e flat minor op. 10,6 - Etude F major op. 10,8 - Etude f minor op. 10,9 - Etude G flat major op. 10,5 - Etude a minor op. 25,11 - Etude a minor op. 25,4 - Etude A flat major op. 25,1 - Etude c minor op. 25,12 - Etude c sharp minor op. 25,7 - Etude D flat major op. 25,8 - Etude e minor op. 25,5 - Etude F major op. 25,3 - Etude f minor op. 25,2 - Etude G flat major op. 25,9 - Etude g sharp