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b. 7-9

composition: Op. 10 No 12, Etude in C minor

No fingering in A

Fingering in FE (→GE)

Fingering in EE

..

In the main text we give the fingering added by Chopin in a proofreading of FE (→GE). Fontana added it in EE in a way which can be considered as naturally stemming from Chopin's hints (although certainly not the only one in the 2nd half of bar 8). 

category imprint: Differences between sources

issues: EE revisions , Authentic corrections of FE

b. 7-8

composition: Op. 10 No 12, Etude in C minor

in A

in FE (→GE,EE

..

The omission of the dashes limiting the range of the dynamic change in FE (→GE,EE) belongs to the most frequent inaccuracies of French first editions of Chopin's works.

category imprint: Differences between sources

issues: Inaccuracies in FE

b. 7-15

composition: Op. 10 No 11, Etude in E♭ major

e1 in A

f1 & e1 in FE (→GE,EE)

f1 & f1 proposed by the editors

..

The change of the inner note in the 4th chord in bar 7 from e1 written in A to ffeatured in FE (→GE,EE) is most probably a result of Chopin's correction. The composer could have striven for a smoother combination of this chord with the next one, without a progression of parallel fifths. According to us, the correction intentionally concerns also two repetitions of this place, in bars 15 and 39 (Chopin omitted one of a few similar places at the time of proofreading on a number of occasions, e.g., in the Etude in G major, No. 5, bar 4).  

category imprint: Interpretations within context; Differences between sources

issues: Authentic corrections of FE , Omitted correction of an analogous place

b. 7-15

composition: Op. 10 No 11, Etude in E♭ major

in A

No indication in FE (→GE,EE

Our variant suggestion

..

Not being certain whether the missing cresc. indication in bars 7 and 15 in the editions corresponds to Chopin's intention, we suggest a variant solution in the main text.

category imprint: Differences between sources

issues: Inaccuracies in FE

b. 7-15

composition: Op. 10 No 11, Etude in E♭ major

..

We add cautionary flats before the 2nd chord in bars 7 and 15 and a  before d2 in bar 17.

category imprint: Editorial revisions