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b. 29

composition: Op. 24 No. 4, Mazurka in B♭ minor

One-part notation in  A

Additional crotchets in GE (→FEEE)

..

The way in which both c1 notes were written in A was the reason why in GE (→FEEE) they were interpreted as having additional downward crotchet stems. Moreover, at the beginning of the bar each of the notes of the seventh c1-b flat2 was written as belonging to a different voice. 

category imprint: Graphic ambiguousness; Differences between sources

issues: Uncertain notes on ledger lines

b. 31

composition: Op. 24 No. 4, Mazurka in B♭ minor

..

In A, the quaver c1 in this bar does not differ much from those from bars 23 and 29, yet the editions do not have an extra crotchet stem added here (except GE3). 

category imprint: Differences between sources; Source & stylistic information

issues: GE revisions , Uncertain notes on ledger lines

b. 32

composition: Op. 24 No. 4, Mazurka in B♭ minor

No slur in A (→GE1FEEE)

A small slur in GE2 (→GE3)

..

We are adding a small slur linking the grace note with the crotchet b flat2. The difference of notation between this bar and the similar bar 24 does not seem intended by Chopin. The sign was already added in GE2 (→GE3).

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 32

composition: Op. 24 No. 4, Mazurka in B♭ minor

A long accent in A

A short accent in GE

A short accent in FE (→EE)

..

The long accent written in A was reproduced in GE as a short one. Its location was also changed, moving it under the note. In FE (→EE) the accent was placed even lower and combined with the  mark.

category imprint: Differences between sources

issues: Long accents , Inaccuracies in GE

b. 32

composition: Op. 24 No. 4, Mazurka in B♭ minor

A synchronization mark in FED

No visual hint provided

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED , Synchronization markings