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b. 3-4

composition: Op. 10 No 6, Etude in E♭ minor

..

Bar 3 in A (→FEGE1GE2GE3) repeats the  from the 1st half of the bar before in the 2nd half of it. The  before f in the 2nd half of bar 4 is similarly repeated. The unnecessary signs were removed in GE4 (→GE5). In analogous bars 11-12 and 43-44 the signs do not appear in any of the sources.  

category imprint: Differences between sources

issues: Cautionary accidentals

b. 3

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

f1-g1 in A

f1-b1 in FE (→GE,EE)

..

The  f1-g1 second in A is most probably the original version of the 3rd semiquaver. In analogous bar 36 Chopin changed it to an f1-bfourth already in A. The traces of corrections are also visible in bar 3, yet the  f1-athird was removed, probably written by mistake. In bar 11, in which the 1st phrase appears one octave higher, the f2-b2 fourth is immediately written in A

category imprint: Differences between sources; Corrections & alterations

issues: Corrections in A , Authentic corrections of FE

b. 3

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

c repeated in A

c tied in FE (→GE,EE)

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The tie sustaining c was added in a proofreading of FE (→GE,EE), undoubtedly by Chopin (he introduced an identical addition in analogous bar 36).

category imprint: Differences between sources

issues: Authentic corrections of FE

b. 3-4

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

No fingering in A (→FEGE)

Fingering in EE

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The entire fingering in EE was added by Fontana. In the part of the R.H. it naturally stems from the fingering given by Chopin as a template in bar 1.

category imprint: Differences between sources

issues: EE revisions

b. 3-4

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

No slur in A

Slur in FE (→GE,EE)

..

The slur was added by Chopin in a proofreading of FE (→GE,EE).

category imprint: Differences between sources

issues: Authentic corrections of FE