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b. 15

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

f1 & f in A

f1 & f in FE

GE & EE

..

The version of A may be the inadvertently left original edition of this bar (or maybe even of bar 7). In any case, a proofreading of FE – despite a possible error in the 2nd half of the bar – does not leave any doubts concerning the final intention of the composer. The natural returning f, which in FE is only before the penultimate note of the bar, was moved before the 7th semiquaver in GE and EE, which may render Chopin's intention accurately. 

category imprint: Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Errors of A , Authentic corrections of FE

b. 15

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

..

The  returning g, without a doubt omitted in A by mistake, was added in a proofreading of FE (→GE,EE).

category imprint: Differences between sources

issues: Omissions to cancel alteration , Errors of A , Authentic corrections of FE

b. 17-20

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

No fingering in A

Fingering in FE (→GE)

..

The fingering in bars 17-19 was added by Chopin in a proofreading of FE (→GE). We give it in the main text except for the erroneous digit over the last triad in the R.H. in bar 17, which is discussed separately. In EE Fontana entirely included Chopin's fingering and added his suggestions in the 2nd half of bar 17 and in bars 19-20.

category imprint: Differences between sources

issues: EE revisions , Authentic corrections of FE

b. 17

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

No fingering in A

'4' in FE (→GE)

'3' in EE & FES

..

In FE (→GE) the lower digit of the last triad's fingering in the R.H. (4) seems to be erroneous, which is proved by a correction performed by Chopin in this place in FES. A similar change was introduced by Fontana in EE.

category imprint: Differences between sources

issues: Annotations in teaching copies , EE revisions , Errors in FE , Annotations in FES

b. 17-19

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

Dashes in A

No dashes in FE (→GE,EE)

..

We consider the lack of the dashes determining the range of cresc. in FE (→GE,EE) as an inaccuracy, often found in first editions of Chopin's works.

category imprint: Differences between sources

issues: Inaccuracies in FE