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b. 31

composition: Op. 10 No 2, Etude in A minor

..

We add a cautionary  before c2. A similar addition was introduced in GE4 (→GE5).

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 32

composition: Op. 10 No 2, Etude in A minor

..

We add a cautionary  before d3.

category imprint: Editorial revisions

b. 32

composition: Op. 10 No 2, Etude in A minor

..

The cautionary natural before d3 was added in a later proofreading of FE (→GE,EE). 

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE

b. 36

composition: Op. 10 No 2, Etude in A minor

..

In CLI there are no naturals returning a1d2 and f2. The accidentals were also absent in FEcor, in which Chopin, however, added all of them. Eventually, both FE (→GE,EE) and Ap have the correct notation.

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , Authentic corrections of FE , Errors of CLI

b. 36

composition: Op. 10 No 2, Etude in A minor

..

The cautionary natural before c1 in the L.H. was added in one of the last proofreadings of FE (→GE,EE). The manuscripts do not have a sign in this place. 

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE