Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


b. 21-23

composition: Op. 25 No 4, Etude in A minor

..

In A (→FE) in three subsequent bars, Chopin did not use the  lowering a to a even once. This inaccuracy is also present in EE1 (→EE2). The notation of FC (→GE1) and EE3 is more accurate –  appears in bar 21. The completely correct notation appears only in GE2 (→GE3). See also bars 23-26.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , GE revisions , Inaccuracies in A

b. 22

composition: Op. 25 No 4, Etude in A minor

..

GE2 (→GE3) added cautionary naturals before f1 and f in the last quaver.

category imprint: Differences between sources

issues: GE revisions

b. 23-26

composition: Op. 25 No 4, Etude in A minor

..

In A (→FE) there are no flats before the e notes in bars 23-25, e1 in the R.H. in bars 24-26 and e1 in the L.H. in bar 25. FC completed only the first of the aforementioned signs (in bar 23), while EE – the first and the last. The notation of GE1 is more accurate – only the sign before e1 is missing in the L.H. in bar 25. The notation of EE3 was also completed, adding both missing signs in the L.H. and the first (in bar 24) in the R.H. It is only GE2 (→GE3) that features the completely correct notation.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , GE revisions , Omission of current key accidentals , Inaccuracies in A

b. 25-26

composition: Op. 25 No 4, Etude in A minor

No markings in A (→FE)

Pedalling in FC (→GE) & EE

..

Lack of pedalling in A (→FE) is one of the examples of an incomplete coordination of corrections and additions introduced by Chopin in three Stichvorlage manuscripts.

category imprint: Differences between sources

issues: Authentic corrections of FC

b. 25-26

composition: Op. 25 No 4, Etude in A minor

Two wedges in A

14 wedges in #CF (→GE) & EE

No marks in FE

..

In A (→FE) there are no wedges in the L.H. in the 2nd half of bar 25 and in bar 26 (as well as in bar 38). This patent inaccuracy was completed in FC (→GE) and EE. In turn, FE overlooked two signs more, on the 3rd and 4th quaver in bar 25.

category imprint: Differences between sources

issues: Inaccuracies in FE , Inaccurate slurs in A