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. 35, Sonata in B♭ minor, Mvt I
All sources repeated a 
on the e2 sound, which implies that it was written by Chopin in [A]. It is a superfluous cautionary sign so we omit it in the main text.
Compare the passage in the sources »
category imprint: Editorial revisions
issues: Cautionary accidentals
notation: Pitch