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b. 15

composition: Op. 10 No 7, Etude in C major

No fingering in A (→FEGE)

Fongering in EE

..

The fingering of EE is Fontana's addition.

category imprint: Differences between sources

issues: EE revisions

b. 15

composition: Op. 10 No 7, Etude in C major

No slur in A

Slur in FE (→GE,EE)

Our suggestion

..

Chopin added the slur in bar 15, while proofreading FE (→GE,EE). According to us, the proofreading's aim was to extend the slur from bar 14. See the remark on extending the slur in bars 6-8.

category imprint: Interpretations within context; Differences between sources

issues: Authentic corrections of FE

b. 15

composition: Op. 10 No 7, Etude in C major

..

In A (→FE) there is no  raising f2 to f2 at the end of the bar. This patent oversight (cf. similar bar 7) was corrected in GE and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , GE revisions , Omission of current key accidentals , Errors of A

b. 15-16

composition: Op. 10 No 7, Etude in C major

No signs in A

in FE (→GE,EE)

..

Chopin added dynamic hairpins at the time of proofreading FE (→GE,EE).

category imprint: Differences between sources

issues: Authentic corrections of FE

b. 16-18

composition: Op. 10 No 7, Etude in C major

No fingering in A

Fingering in FE (→GE)

..

In the main text we give the fingering in bar 17, added by Chopin in a proofreading of FE (→GE). In EE Fontana added similar indications also at the beginning of adjacent bars. 

category imprint: Differences between sources

issues: EE revisions , Authentic corrections of FE