Issues : Errors of CLI

b. 33-34

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

No ties in CLI

Ties in ApFE (→GE,EE

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In CLI the E-e octave is not sustained to the next bar, which is probably a mistake. 

category imprint: Differences between sources

issues: Errors of CLI

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. 37

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

No  in CLI

Natural in ApFE (→GE,EE

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Lack of the  returning b2 on the penultimate semiquaver is most probably an inaccuracy of notation of CLI. Chopin added the accidental in FEcor.

category imprint: Interpretations within context; Differences between sources

issues: Errors of CLI

b. 39

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

..

In CLI and FEcor the  returning d1 on the 4th beat of the bar was overlooked, which is a patent error.

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , Errors of CLI

b. 40

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

..

In CLI there are no naturals returning a1 and d2. The accidentals were also originally absent in FEcor, in which Chopin added both these two naturals and a third one returning f2 on the last semiquaver in the lower voice. 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