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b. 8

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

 in A

Two signs in FE (→EE)

 in GE

..

The additional  sign, placed in FE (→EE) between the staves, seems to be added during a proofreading, thus correct. The hairpins could refer to the R.H., which would cause problems (crescendo on a long note), or to the left one, where they would double the sign placed under the semiquavers. Due to this fact, we think that the most likely explanation is the following: the sign put in A under the semiquavers in the L.H. was erroneously reproduced in FE over them. In the last proofreading of FE (not included in GE) Chopin added the second  under the L.H., confirming his intention of providing the progression of semiquavers with this sign. Therefore, in the main text we give only the hairpins of A

category imprint: Interpretations within context; Differences between sources

issues: Inaccuracies in FE , Authentic corrections of FE

b. 8-9

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

No fingering in A (→FEGE)

Fingering in EE

..

The fingering of the R.H. added by Fontana in EE seems to be accurate, although it is not the only possibility and it does not arise from Chopin's fingering.

category imprint: Differences between sources

issues: EE revisions

b. 9-10

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

Two slurs in A, contextual interpretation

One slur in FE (→GE,EE)

..

Two slurs in A are clearly shorter than their counterparts in bars 1-2, however, there is no doubt that it is a result of a less careful notation. In FE (→GE,EE) it was understood in the same way, yet only the second slur, in bar 10, was reproduced. See bars 1-4.

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , Inaccurate slurs in A

b. 10-11

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

Accents in A

Accent in FE (→GE,EE)

Our interpretation of accents in A

..

The accent in bar 10 in A is shorter than a few previous ones and the one in bar 11; however, it seems to be an inaccurate notation. In the editions the sign in bar 11 was omitted.

category imprint: Graphic ambiguousness; Differences between sources

issues: Long accents , Inaccuracies in FE

b. 12

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

..

In this context the missing  before d must be considered as Chopin's oversight (in the remaining two analogous bars the sign is both in A and the remaining sources).

category imprint: Differences between sources

issues: EE revisions , GE revisions , Cautionary accidentals