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b. 7

composition: Op. 25 No 1, Etude in A♭ major

6 times b in AI

6 times a in A (→CDP,GE), FE & EE

..

In the first three figures the L.H. in AI has a b as the 3rd and 5th semiquavers. It is an earlier version, changed by Chopin still before writing A, in which the eventual version – with a – is already written in the final form.  

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes

b. 7-8

composition: Op. 25 No 1, Etude in A♭ major

A (→CDP,GE), FE & EE

..

In AI in both bars the 3rd figure in the R.H. preserves the regular melodic shape, i.e. the last two notes of the sextuplet are the same as the second and third note. Chopin changed it in A (→GE), correcting the already written original version. The remaining sources also include the final version.

category imprint: Differences between sources; Corrections & alterations

issues: Deletions in A , Accompaniment changes

b. 7

composition: Op. 25 No 1, Etude in A♭ major

f1 in AI, A (→GE), FE & EE

e1 in CDP

..

The version of #CFP, although possible from the harmonic point of view, is most probably simply a mistake.

category imprint: Differences between sources

issues: Errors of CDP

b. 7

composition: Op. 25 No 2, Etude in F minor

Fingering written into FED

No teaching fingering

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED

b. 7-8

composition: Op. 25 No 2, Etude in F minor

  in AT

  in AW

No signs in GC (→GE)

  in CDP & FE

  in EE

..

The missing   in GC (→GE) is probably the copyist's oversight. Among marginal differences in the range of signs in particular sources, only the shorter hairpins of AW may suggest a slightly different shaping of the nuance. In the main text, we give the hairpins on the basis of FE (and CDP).

category imprint: Differences between sources

issues: Scope of dynamic hairpins , Errors of GC