Issues : Authentic corrections of FE

b. 25-26

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

No fingering in A

Fingering in FE

Fingering in GE 

Fingering in EE

Fingering in FED, interpretation

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The fingering printed in FE is certainly authentic, however, it includes a patent error consisting in switching the digits. Chopin partially corrected this mistake by writing '3' in FED instead of '2' for the 2nd note in bar 25. In the main text we give the already fully corrected version of this fingering, already introduced in GE. Fontana, while checking and adding the fingering in EE, also corrected this error.

category imprint: Differences between sources

issues: EE revisions , Authentic corrections of FE

b. 26

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

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In A there is no cautionary  before c. The accidental was added in a proofreading of FE (→GE,EE). In the main text we add yet another one before the 7th note (in view of the C in the R.H. chord).

category imprint: Differences between sources; Editorial revisions

issues: Cautionary accidentals , Authentic corrections of FE

b. 27

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

Dotted rhythm in A

Semiquavers in FE (→GE,EE

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Chopin changed the rhythm of A while proofreading FE (there are visible traces of this change). The withdrawal from the rhythmic underlining of the topmost note of the passage may be related to a minor change in the Etude's concept, revealed also in increasing its tempo. See also bars 30 and 32.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE , Dotted or even rhythm

b. 27-28

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

Fingering in A

Fingering in FE (→GE)

Fingering in EE

Our variant suggestion

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Bar 27 is one of two bars in which the fingering is already included in A. It was repeated and completed in FE (→GE,EE), yet with one exception – the last digit in A is written under the penultimate note and in the editions – under the last one. According to us, the engraver's error is a more possible explanation than Chopin's correction. Therefore, in the main text we consider both possibilities, however, we give preference to the undoubtedly authentic version of A.
In EE one digit was added. 

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Authentic corrections of FE

b. 27-28

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

Short slur in A

Longer slur in FE (→GE)

Longest slur in EE

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In A the slur embraces only the last semiquaver in bar 27 and the chord ending the phrase in bar 28. In FE (→GE), probably due to Chopin's proofreading, the slur is over the 2nd half of bar 27. In EE the slur was extended to the beginning of bar 28, which we consider to be the most accurate global interpretation of the composer's intention, including the ideas of the slur of both A and FE.

category imprint: Differences between sources

issues: Authentic corrections of FE , Uncertain slur continuation