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b. 4

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

f in CLI

in ApFE (→GE,EE

..

Chopin took the decision to lower the fifth already at the stage of preparing the base text for FE. Ap also has the final version with f. Similarly in analogous bars 12 and 39.

category imprint: Differences between sources

issues: Accompaniment changes

b. 4

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

..

In CLI and EE2 the  returning d1 on the 4th beat of the bar was deleted, which is a patent error. In CLI there is a superfluous  before gin this chord, which shows that Chopin did not include in the notation the previous alterations in this bar at all. Similarly in bar 12. 

category imprint: Interpretations within context; Differences between sources

issues: Errors in EE , Omissions to cancel alteration , Errors of CLI

b. 6

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

..

In CLI the lower note is an erroneous f2.

category imprint: Interpretations within context; Differences between sources

issues: Errors of CLI

b. 7

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

Sixth in CLI

Triad in ApFE (→GE,EE

..

The lack of e1 in CLI may be the original version or – which is much more probable – an error of the copyist (omissions of internal notes of the chords written on ledger lines were quite frequent at the time of reading Chopin's autographs).

category imprint: Differences between sources

issues: Uncertain notes on ledger lines

b. 7

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

E-minor in CLI (interpretation) & Ap

E-minor in FE (→EE2EE3)

E-major in GE1

E-major in GE2 (→GE3GE4GE5) & EE4

..

On the 2nd beat of the bar in the R.H. we give the E minor triad (with a  before g2) according to FE (→EE2EE3) and Ap. The natural is, however, absent in FEcor and it was also not included in the copy which served as the base text for GE. In order to avoid the mode discrepancy between the parts of both hands, the reviser of GE1 took the decision to add a  raising g1 into g1 in the L.H. In GE2 and subsequent ones, an additional  was added before g2 in the R.H. These arbitrary changes were also introduced in EE4

category imprint: Differences between sources

issues: EE revisions , Errors in FE , Omissions to cancel alteration , GE revisions , Authentic corrections of FE