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. 7

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

..

AT, AW and CDP do not have here the  before the 5th (e2) quaver. In AW and CDP, the inaccuracy is also in bar 26, while in CDP also in bar 57. 

category imprint: Interpretations within context; Differences between sources

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

b. 7-15

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

..

At the beginning of bars 7 and 15 we add cautionary naturals before and g. The signs before the 1st quaver in both bars were introduced in GE and EE3, before the second – only in GE2 (→GE3).

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions

b. 7-8

composition: Op. 64 No 3, Waltz in A♭ major

Hairpins in A

FE (→EE), GE2op (→GE3op) & GE2Ab

No signs in GE1op & GE1Ab

..

The  hairpin is shifted in FE – contrary to A – to the beginning of the bar. In the editors opinion, this is due to inaccuracy. In GE1op and GE1Ab both  and  signs were overlooked in these bars, what later versions of GE supplemented.

category imprint: Differences between sources

issues: Inaccuracies in FE , Scope of dynamic hairpins , Errors in GE

b. 7-8

composition: Op. 25 No 6, Etude in G♯ minor

..

In FC, in both bars, the 2nd, 3rd and 4th group of semiquavers are written in an abbreviated manner as repetition of the first. Similarly in analogous places – cf., bars 19-20, 23-24, 35-36, 39-40, 49-50 and 53-54.

category imprint: Differences between sources

issues: Abbreviated notation of A

b. 7-8

composition: Op. 25 No 6, Etude in G♯ minor

No accidentals in FC (→GE1), FE & EE

Naturals in GE2 (→GE3)

Naturals suggested by the editors

..

In front of the 2nd semiquaver in each of these bars, there are no accidentals in the sources except for naturals added in GE2 (→GE3), which cannot come from Chopin. Therefore, it seems that the top note is supposed to be a2. However, there are strong grounds, both source (proved also in other pieces Chopin's doubts concerning the notation of a/a notes in the G minor key) and stylistic (natural harmonic passage), for considering it as Chopin's mistake. Therefore, in the main text we suggest to add naturals to achieve the sound of a2.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Errors in FE , Errors in EE , Errors in GE , GE revisions , Last key signature sign , Errors of FC