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b. 1

composition: Op. 29, Impromptu in A♭ major

 
 
..

The  time signature is most probably an error or FE's and GE's revision. Changes of time signature indication of that kind are to be found on a number of occasions also in other Chopin's pieces issued by those publishing houses – cf. e.g. Etude in C, Op. 10 No. 1, bar 1..

category imprint: Differences between sources

issues: Changes of metre , Inaccuracies in GE , Inaccuracies in FE , 4/4 or 2/2

b. 1

composition: Op. 29, Impromptu in A♭ major

..

In FE the indication legato was put between the pentagrams. It is unknown whether such placement complies with Chopin's intention or if it is an inaccuracy in the base's reproduction. After all, it is not of practical importance, as in Chopin's notation signs and indications placed over the R.H. may refer to both hands.

category imprint: Differences between sources

issues: Inaccuracies in FE , Placement of markings

b. 1

composition: Op. 29, Impromptu in A♭ major

 
 
..

In the pupil's copy FED Chopin included fingering. We give it as a proposal of the editors.

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED

b. 1-2

composition: Op. 29, Impromptu in A♭ major

A, FE, EE

..

In GE a change in the tie layout in all analogous places was performed (bars 4-5, 19-21, 83-84, 87-88 and 101-103). A's notation in bars 2, 16, 84, 88 and 101-103 proves that the graphic layout with one quaver tie was developed by Chopin.

category imprint: Differences between sources

issues: GE revisions

b. 1-2

composition: Op. 29, Impromptu in A♭ major

 
 
 
..

The moment of pedal release is indicated heterogeneously in the sources. In A and FE the asterisk is placed slightly further than in the analogous place in bar 2, a situation which we have harmonised. However, we preserve the minor difference between placement of that sign in the first (under the 4th quaver) and second half of bars 1-2 (before the 4th quaver). It can suggest a slightly longer pedal in the 1st halves of those bars. In GE and EE all 4 signs are put in analogous places.

category imprint: Graphic ambiguousness; Differences between sources