Issues : Authentic corrections of FE

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. 70

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

No slur in A

Slur in FE (→GE,EE

..

Lack of the slur over the 2nd half of the bar in A is certainly Chopin's oversight, corrected in FE (→GE,EE).

category imprint: Differences between sources

issues: Authentic corrections of FE

b. 72

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

No fingering in A

Fingering in FE (→GE

Fingering in EE

..

In the main text we give the fingering added by Chopin in a proofreading of FE (→GE). We do not include the specifying additions introduced by Fontana to EE.

category imprint: Differences between sources

issues: EE revisions , Authentic corrections of FE

b. 73-76

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

No fingering in A

Fingering in FE (→GE

Fingering in EE

Fingering in FED

..

In the main text we give the fingering added by Chopin in a proofreading of FE (→GE). In bars 73-74 we also add specifying entries made by Chopin in FED. However, we do not include this kind of additions performed by Fontana in EE.

category imprint: Differences between sources

issues: Annotations in teaching copies , EE revisions , Annotations in FED , Authentic corrections of FE

b. 73

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

No mark in A

Dot in FE (→GE,EE

..

Most probably Chopin added the staccato dot in a proofreading of FE (→GE,EE). In A the reason for its omission could be a mistake whose correction required rewriting the entire bar.

category imprint: Differences between sources; Corrections & alterations

issues: Errors resulting from corrections , Authentic corrections of FE