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b. 26

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

..

Same as in bar 7, AW and CDP do not have a  before the 5th quaver (e2).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Errors of A , Errors of CDP

b. 44

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

..

Before the 8th semiquaver, CDP, GC (→GE) and EE have a cautionary  (unnecessary in this context). FE has an erroneous  in this place, which was corrected by Chopin in FED and FES.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , Errors in FE , Annotations in FED , Cautionary accidentals , Annotations in FES

b. 56

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

Natural (b1) in AW, CDP, EE2 (→EE3), FES & GE2 (→GE3)

No accidental (b1) in GC, FE & EE1

Flat (b1) in GE1

..

The notation of this bar is erroneous or inaccurate in the majority of the sources. Most probably, Chopin, writing this fragment in [A] for the third time (after analogous bars 6 and 25), had already such a strong correlation of the notes with the proper sound that he did not notice the missing  before the 4th quaver. Cancelling this alteration was, as usual, obvious, hence it was not marked even when the composer would correct the notation of this bar in FES (AW also does not include the ).

The cautionary  added before the 4th quaver in GE1 is certainly an editorial revision (most probably erroneous).

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues: EE revisions , Errors in FE , Errors in EE , Omissions to cancel alteration , Errors in GE , GE revisions , Errors of A , Errors of GC

b. 61

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

..

In GE and EE3 there is a cautionary  before d3. In the latter, there is also a  before d1 in the L.H.

category imprint: Differences between sources

issues: EE revisions , GE revisions

b. 62

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

c2 in AW

a1 in CDP, GC (→GE), FE & EE

..

AW reveals Chopin's hesitation, as far as the pitch of the 2nd crotchet is concerned: next to the eventually left c2 note, one can see the previously deleted both aand c2. In the main text we give afeatured in CDP, GC (→GE), FE and EE, yet in this situation the version with c2 may be considered as almost equal.

category imprint: Differences between sources; Corrections & alterations

issues: Chopin's hesitations , Deletions in A