Etudes, opus 10, opus 25

Etudes, op. 10. No. 1 in C major ; No. 2 in A minor ; No. 3 in E major ; No. 4 in C sharp minor ; No. 5 in G flat major, "Black keys" ; No. 6 in E flat minor ; No. 7 in C major ; No. 8 in F major ; No. 9 in F minor ; No. 10 in A flat major ; No. 11 in E flat major ; No. 12 in C minor, "Revolutionary"

Etudes, op. 25. No. 1 in A flat major ; No. 2 in F minor ; No. 3 in F major ; No. 4 in A minor ; No. 5 in E minor ; No. 6 in G sharp minor ; No. 7 in C sharp minor ; No. 8 in D flat major ; No. 9 in G flat major ; No. 10 in B minor ; No. 11 in A minor ; No. 12 in C minor.