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b. 22

composition: Op. 10 No 11, Etude in E♭ major

..

In A there is no  lowering to g in the 1st chord in the L.H.

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals , Errors of A , Authentic corrections of FE

b. 22

composition: Op. 10 No 11, Etude in E♭ major

g1 in A

f1 in FE (→GE,EE)

..

The change of the bottom note in the 3rd chord from g1 to f1 is undoubtedly a result of Chopin's correction in FE (→GE,EE).

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of FE

b. 23

composition: Op. 10 No 11, Etude in E♭ major

..

Three cautionary naturals before the 3rd quaver in the bar are present in A, yet they were removed in a proofing of FE (→GE1,EE3). It seems to be Chopin's mistake, as after d1 and d2 at the end of the previous bar, the warning is quite justified in this place. The accidentals were added in subsequent GE,s and EE4 (in the latter only in the R.H.).

category imprint: Differences between sources; Corrections & alterations

issues: EE revisions , GE revisions , Cautionary accidentals , Authentic corrections of FE

b. 23

composition: Op. 10 No 11, Etude in E♭ major

..

In A there is no  lowering c3 to c3 in the 1st chord in the R.H.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Errors of A , Authentic corrections of FE

b. 24

composition: Op. 10 No 11, Etude in E♭ major

..

Lack of flats returning e in the last chord in A (→FEGE1,EE3) is certainly Chopin's oversight. The accidentals were added in FED and GE2 (→GE3GE4) and EE4.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , Annotations in FED , Omissions to cancel alteration , Errors of A