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b. 69

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

 in A (→FEGE)

 in EE

..

It is hard to determine whether lack of  in EE is a result of a mistake or revision.

category imprint: Differences between sources

issues: Errors in EE

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. 70

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

Different accents in A

Short accents in FE (→GE,EE

Our suggestion

..

In A both accents in this bar differ significantly in their length, which was not considered in the editions. According to us, the first one, long, refers rather to the upper voice, therefore, in the main text we move it over the chord.

category imprint: Differences between sources; Editorial revisions

issues: Long accents

b. 70

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

Semibreve d2 in A (→FEEE,GE1GE2)

Minim d2 in GE3 (→GE4)

..

It is hard to determine with certainty if placing d2 on one stem with the g1 minim in GE3 (→GE4) was an intentional action or a mistake.

category imprint: Differences between sources

issues: Errors in GE , GE revisions

b. 71

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

Long accent in A

No mark in FE (→GE,EE

Our variant suggestion

..

Not being certain whether the accent's omission is compatible with Chopin's intention, we suggest a variant solution.

category imprint: Differences between sources

issues: Long accents