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Rhythm

b. 56

composition: Op. 25 No 10, Etude in B minor

No tie in GC (→GE1) & GE3

d-e tie in FE, EE & GE2

..

The missing slur combining d and e in GC (→GE1) is most probably the copyist's mistake – in the analogous bar 76 a relevant slur is present in GC. Both the addition of the slur in GE2 and its removal in GE3 are arbitrary changes, harmonising both places. 

category imprint: Differences between sources

issues: GE revisions , Errors of GC

b. 60

composition: Op. 25 No 10, Etude in B minor

Quaver b in GC (→GE) & EE1

Crotchet d1 in FE & EE2

Crotchet & quaver in EE3

..

The extension of d1 in the 5th octave and deletion of in the 6th quaver are the last of the changes, introduced probably in the proofreading of FE, separating an additional melodic line within the octaves. EE2 adopted the changes, yet EE3 – most probably under the influence of GE – reintroduced the note. Similarly in bar 80.

category imprint: Differences between sources; Corrections & alterations

issues: EE revisions , Authentic corrections of FE

b. 66

composition: Op. 25 No 10, Etude in B minor

 (error) in GC (→GE1)

 in FE & EE

 in GE2 (→GE3)

category imprint: Interpretations within context; Differences between sources

issues: Errors in GE , GE revisions , Rhythmic errors , Errors of GC

b. 70

composition: Op. 25 No 10, Etude in B minor

Dotted minim f in GC & EE

Dotted minim with tie in FE

Minim in GE1

Dotted crotchet in GE2 (→GE3)

..

It is hard to state whether the lack of extending dot of f in GE1 is a revision – by analogy to bar 50 – or a mistake. The version of GE2 (→GE3) does not find justification in the sources.

It is also unclear how the tie sustaining f in FE is to be considered. It could be Chopin proofreading, yet also an earlier version or even a mistake, as the tie is absent both in analogous bars 50-51 and the remaining sources. Therefore, we do not include it in the main text.

category imprint: Differences between sources

issues: GE revisions

b. 76

composition: Op. 25 No 10, Etude in B minor

d-e tie in GC (→GE1GE2), FE & EE

No tie in GE3

..

Deletion of the tie of d-e in GE3 is a result of a revision aiming at harmonising bars 56 and 76, this time on the basis of the version of GC in bar 56.

category imprint: Differences between sources

issues: GE revisions