Op. 2, Variations in B♭ major
Op. 10, 12 Etudes
Op. 11, Concerto in E minor
Op. 21, Concerto in F minor
Op. 22, Polonaise in E♭ major
Op. 24, 4 Mazurkas
Op. 25, 12 Etudes
Op. 26, 2 Polonaises
Op. 27, 2 Nocturnes
Op. 28, 24 Preludes
Op. 30, 4 Mazurkas
Op. 35, Sonata in B♭ minor
Op. 50, 3 Mazurkas
Op. 63, 3 Mazurkas
Op. 64, 3 Waltzes
Op. 10 No 4, Etude in C♯ minor
The octave in AI is most probably the original version, changed by Chopin probably in [A]. The change may be explained with the willingness to preserve the bottom C1 in order to enhance the effect of the final octaves of the Etude.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
notation: Pitch