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b. 42

composition: Op. 10 No 10, Etude in A♭ major

No fingering in A (→FEGE)

Fingering in EE

..

Fontana's addition of the fingering in EE may be considered here as justified, as such a melodic phrase has not yet occurred in the Etude's current flow. 

category imprint: Differences between sources

issues: EE revisions

b. 42-43

composition: Op. 10 No 10, Etude in A♭ major

No pedalling in A

 in FE (→GE1)

  in GE2 (→GE3GE4) & EE

Our suggestion

..

Lack of the pedal release mark depressed in the middle of bar 42 must be considered as the notation's inaccuracy in this context. The  mark was added in EE and GE2 (→GE3GE4) at the end of bar 42, which is undoubtedly justified with similar indications in the previous bars. We suggest a completion after the notation of A at the beginning of bar 44.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: EE revisions , GE revisions , Authentic corrections of FE , No pedal release mark

b. 43-45

composition: Op. 10 No 10, Etude in A♭ major

No fingering in A

Fingering in FE (→GE,EE)

..

The fingering in bars 43 and 45 in the main text – in total six times the 1st finger – originates from Chopin's proofreading of FE (→GE,EE).

category imprint: Differences between sources

issues: Authentic corrections of FE

b. 43

composition: Op. 10 No 10, Etude in A♭ major

f4 in A & GE

f3 in FE (→EE)

..

The longer octave sign in A is almost certainly Chopin's mistake. The error reached GE, where it remained unnoticed, through a proof copy of FE. In the last proofreading of FE (→EE), f4 was changed to f3, probably on the composer's request.

category imprint: Differences between sources

issues: Errors of A , Authentic corrections of FE

b. 43-44

composition: Op. 10 No 10, Etude in A♭ major

 in A

No markings in FE (→GE,EE)

..

According to us, omission of the  marks in the editions is of accidental nature. Cf. bar 16, as well as the Etudes in Gmajor, No. 5, bar 32F minor, No. 9, bar 4C minor, No. 12, bar 27.

category imprint: Differences between sources

issues: Errors in FE