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. 29, Impromptu in A♭ major
In A the 1st half of the bar was originally written in the following way:
Then Chopin changed the notation of the 1st and 3rd quavers and deleted the already unnecessary 
in front of c2 on the 4th quaver. However, he did not realise that the 
and next to the 5th and 6th quavers are also superfluous. The presence of the unnecessary signs in EE (three) and FE (next to g1) proves that the described enharmonic change was also introduced in the two remaining manuscripts serving as base text for EE and FE.
The deletion before the 7th quaver, which can be seen in A, is also probably an enharmonic correction of that note – originally Chopin wrote there b1.
Compare the passage in the sources »
category imprint: Corrections & alterations
issues: Enharmonic corrections
notation: Pitch
