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b. 19

composition: Op. 30, Mazurka in D♭ major

..

In FC one can see cautionary flats to g2 and e2, added in pencil by the reviser of GE1. These marks, which we do not consider part of the text of FC, were included in GE.

category imprint: Differences between sources

issues: GE revisions , Foreign hand additions in manuscripts

b. 27

composition: Op. 30, Mazurka in D♭ major

..

In the main text we omit the Chopinesque  to g2, present in all sources, totally unjustified in this place. The same in bar 35.

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign

b. 30

composition: Op. 30, Mazurka in D♭ major

..

In FC Chopin deleted all three L.H. chords written by Fontana and replaced them with new ones. The reason was a mistake by the copyist, who wrote g as the bottom note of the chords thrice (instead of f).

category imprint: Corrections & alterations; Source & stylistic information

issues: Errors of FC , Authentic corrections of FC

b. 31-39

composition: Op. 30, Mazurka in D♭ major

..

In FC there are cautionary accidentals written in crayon to the last quaver in bars 31, 35 and 39 (a  to c2 and a  to d2). They come from the reviser of GE1, hence they were included in that edition. EE also include a natural in bar 31; in the main text we give all 3 accidentals.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions , Foreign hand additions in manuscripts

b. 33

composition: Op. 30, Mazurka in D♭ major

..

In the main text we add a cautionary  to d1. It was also added in GE.

category imprint: Differences between sources; Editorial revisions

issues: GE revisions