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b. 68

composition: Op. 10 No 12, Etude in C minor

..

The cautionary natural before was added in a proofreading of FE (→GE,EE), most probably by Chopin.
A (→FEEE,GE1GE2) includes a repeated  before the 12th note in the L.H. The unnecessary in this context accidental was removed in GE3 (→GE4).

category imprint: Differences between sources; Editorial revisions

issues: Cautionary accidentals , Authentic corrections of FE

b. 68

composition: Op. 10 No 12, Etude in C minor

Short accent in A

No mark in FE (→GE,EE

Our variant suggestion

..

According to us, the long accent would be more appropriate here than the short accent of A, which we consider as written inaccurately (cf. bar 66). In FE (→GE,EE) the sign was not included at all, which can be considered to be justified due to the less intense dynamics in bars 67-68 in comparison with bars 65-66. Taking this into account, in the main text we leave the application of the accent at the performer's discretion.

category imprint: Differences between sources

issues: Long accents , Inaccuracies in FE

b. 69-71

composition: Op. 10 No 12, Etude in C minor

No fingering in A (→FEGE)

Fingering in EE

..

We do not include the fingering added by Fontana in EE. In bar 69 Fontana repeated and completed Chopin's fingering from bar 65, while in two subsequent bars he indicated the fingering given earlier in analogous bars 55 and 49.

category imprint: Differences between sources

issues: EE revisions

b. 69-72

composition: Op. 10 No 12, Etude in C minor

..

We give the slurring of the figures in the L.H. in a standardised version, despite the fact that some of the slurs are written slightly inaccurately.

category imprint: Interpretations within context

issues: Inaccurate slurs in A

b. 69

composition: Op. 10 No 12, Etude in C minor

Long accent in A

Short accent in FE (→GE,EE3

No mark in EE4

..

Contrary to FE (→GE,EE3), we consider the accent in A to be a long one. In EE4 the mark was omitted.

category imprint: Differences between sources

issues: Long accents