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b. 4-12

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

Crotchets g & G in A

..

In bars 4 and 12 additional crotchet stems were omitted in the editions, perhaps due to a misunderstanding of A by the engraver of FE.

category imprint: Differences between sources

issues: Inaccuracies in FE

b. 5-6

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

Long accent in A & EE

Short accent in FE (→GE)

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In A the accent in bar 5 is significantly longer than the one in bar 6 (similarly in bars 9-10). A minor difference was reproduced only in EE, which is probably a fortuitous coincidence.

category imprint: Differences between sources

issues: Long accents , Inaccuracies in GE

b. 5-14

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

No slurs in A (→FEGE)

Seven slurs in EE3

Ten slurs in EE4

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The whole-bar long slurs of EE are an arbitrary addition of the reviser who simply copied the authentic slurs from bars 1-4. The revision includes bars 5-11 in EE3 and in EE4 also bars 12-14.

category imprint: Differences between sources

issues: EE revisions

b. 6-8

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

Slur in A

Slurs in FE (→GE,EE)

Slur suggested by the editors

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Chopin added a slur in bars 7-8 at the time of proofreading FE (→GE,EE). According to us, the proofreading's goal was to extend the slur from bar 6 and the applied solution is of a simplified nature – extending a slur required much more workload of the engraver, thus Chopin could have felt embarrassed to require such a change in a place which, actually, was printed in accordance with the base text. See the remark concerning extending the slur of A in bars 2-3. Cf. bars 14-15. 

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues: Authentic corrections of FE

b. 6

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

 in A

  in FE (→GE,EE3)

Three hairpins in EE4

Our variant suggestion

..

A has only a  mark in the 2nd half of the bar, while FE (→GE,EE3) only   marks in the 1st half. The marks added in the 1st half of the bar are undoubtedly a result of Chopin's proofreading, however, it is not entirely clear in the case of the mark omitted in the 2nd half of the bar. Therefore, in the main text we include the addition performed in FE (interpreting the  mark as continuation of the previous one), yet we do not entirely renounce the hairpins written in A (cf. bar 7). A similar solution was introduced in EE4.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Authentic corrections of FE , Hairpins denoting continuation