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b. 113

composition: Op. 30 No. 4, Mazurka in C# minor

..

The cautionary  to a2 visible in FC was added by the reviser of GE. The accidental does not seem necessary here, and the other editions did not add it.

category imprint: Differences between sources

issues: GE revisions , Foreign hand additions in manuscripts

b. 119-123

composition: Op. 30 No. 4, Mazurka in C# minor

..

In the main text we add cautionary naturals to a1 in bars 119, 121 and 123. The first two were also added in GE on the basis of the pencil additions to FC by the reviser of that edition.

category imprint: Differences between sources; Editorial revisions

issues: GE revisions , Foreign hand additions in manuscripts

b. 123

composition: Op. 30 No. 4, Mazurka in C# minor

..

In FC there is no  to the topmost quaver. The patent mistake was corrected in GE.

category imprint: Interpretations within context; Differences between sources

issues: GE revisions , Errors of FC

b. 127-129

composition: Op. 30 No. 4, Mazurka in C# minor

c1 only in chord in b. 128 in FC

4 notes c1 in chords in FE (→EE) & GE2

No c1 in chords in GE1

..

The three-note chords present in FE (→EE) are much more likely here, since they prepare and open the chordal sequence in bars 129-132. The FC version almost certainly resulted from the copyist's carelessness, who did not take care of the visibility of the notes written on the ledger line. This is indicated by the notation of the first two chords in bar 129, in which it is also the e1 notes that are practically imperceptible, although their presence is unquestionable. In GE1 it was also c1 in bar 128 that was overlooked, in spite of the presence of this note having been marked in FC. The notes overlooked in GE1 were added in GE2, perhaps on the basis of a comparison with FE.

category imprint: Differences between sources

issues: GE revisions , Uncertain notes on ledger lines , Errors of FC

b. 130-132

composition: Op. 30 No. 4, Mazurka in C# minor

..

In this chromatic progression, the notation of the sources does not contain any mistakes, and Chopin took care of a few cautionary accidentals – to g1-b1 at the beginning of bar 130, to g1 in bar 131 and to d1-f1 in bar 132. In the main text we also add naturals to e in bar 130 and to B and a in bar 132. The latter were also added by GE (a  to B) and EE (a  to a).

category imprint: Differences between sources; Editorial revisions; Source & stylistic information

issues: EE revisions , GE revisions , Cautionary accidentals