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b. 7-15

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

..

We add cautionary flats before the 2nd chord in bars 7 and 15 and a  before d2 in bar 17.

category imprint: Editorial revisions

b. 12

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

..

In GE3 (→GE4) the inner note of the 1st chord in the L.H. is a b. It must be a mistake.

category imprint: Differences between sources

issues: Errors in GE , Terzverschreibung error

b. 15

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

a in chord in A

No a in FE (→GE,EE

..

Lack of a in the 1st chord in the editions is most probably a result of a mistake of the engraver of FE. Cf. bars 7 and 39.

category imprint: Differences between sources

issues: Errors in FE

b. 16

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

..

In A there is no  lowering to g on the 5th quaver in the bar. The accidental was added in FE (→GE,EE).

category imprint: Differences between sources

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

b. 17

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

B in A

A in FE (→GE,EE

..

It is hard to determine what prompted Chopin (?) to enharmonically change the correct orthography of A to a simplified notation of FE (→GE,EE). In the main text we give the notation of A.

category imprint: Differences between sources; Corrections & alterations

issues: Enharmonic corrections , Authentic corrections of FE