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b. 7

composition: Op. 10 No 1, Etude in C major

..

The cautionary  in front of is absent in CLI and GE1. The lack of the sign in GE1 suggests that the sign was added only in the last proofreading of FE, which is confirmed by visible traces of introducing changes.

category imprint: Differences between sources

issues: Cautionary accidentals

b. 7

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

Crotchets in CLI & Ap

Quavers & rests in FE (→GE,EE

..

The alignment of the notation of the L.H. to the rhythm of the previous bars introduced in FEcor (→FEGE,EE) is an undeniable improvement.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of FE

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

b. 7

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

f1-a1 in CLI (interpretation)

d1-a1 in Ap

f1-b1 in FE (→GE,EE

..

In the main text we give b1, which Chopin introduced instead of previous a1 while still preparing the base text for FE (→GE,EE), as the topmost note of the chord. The inner note of the chord reveals Chopin's hesitation between f1 in CLI and FE (→GE,EE) and din Ap

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes