Issues : Errors of A

b. 37-38

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

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In A there are no flats lowering d2-d3 to d2-d3 in bar 38. The mistake was corrected in GE and EE. In bar 37 in FE was overlooked before the lower note of the 4th chord, which was also corrected in GE and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Omission of current key accidentals , Errors of A

b. 40

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

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Before the last chord in A there are no naturals returning c2 and c3. The accidentals were probably added only in the last proofreading of FE (→EE), as they are not included in GE1 (they were added in subsequent GE,s).

category imprint: Interpretations within context; Differences between sources

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

b. 48-49

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

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In A Chopin did not check the notation of accidentals in these bars. In each of them the  returning c4 in the 4th chord is missing, as well as the flats returning e1 in the 5th chord and b3 in the last one. In FE (→GE,EE) all necessary accidentals were added, same as cautionary naturals before c1 and flats before b. In FE, however, the  raising e3 to e3 in bar 49 was overlooked, which was corrected in GE and EE, as well as in FED. Moreover, we add a cautionary  before ain bar 49; the accidental was already added in GE and EE4 together with a less justified cautionary  before a.  

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , EE revisions , Errors in FE , Annotations in FED , Omissions to cancel alteration , GE revisions , Errors of A , Authentic corrections of FE