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b. 28

composition: Op. 29, Impromptu in A♭ major

 
 
..

The stem sustaining the 10th quaver d2 in EE is certainly a mistake. The remaining three stems also seem to be erroneously placed one bar too early (cf. bars 29-30). 

category imprint: Differences between sources

issues: Errors in EE

b. 28

composition: Op. 29, Impromptu in A♭ major

..

Before the last note of the bar, f2, EE has an unnecessary cautionary flat.
The sign was also included in A; however, it was deleted by Chopin.

category imprint: Differences between sources; Corrections & alterations

issues: Deletions in A

b. 28

composition: Op. 29, Impromptu in A♭ major

..

In A there are visible deletions of additional crotchet stems sustaining the sound of the 3rd and 6th quavers. It may stem from an attempt to try to make the sound concept of that fragment more precise or a correction of mistakes in designating similar bars. 

category imprint: Corrections & alterations

issues: Deletions in A

b. 28

composition: Op. 29, Impromptu in A♭ major

..

In A one can see a deletion of the indication poco accel.

category imprint: Corrections & alterations

issues: Deletions in A

b. 28-30

composition: Op. 29, Impromptu in A♭ major

..

On the 4th and 10th quavers in A there are visible deletions and corrections of notation from e into d.

category imprint: Corrections & alterations

issues: Deletions in A , Enharmonic corrections