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


Pitch

b. 62

composition: Op. 29, Impromptu in A♭ major

..

We add the cautionary natural g2 next to the grace note.

category imprint: Editorial revisions

b. 62

composition: Op. 29, Impromptu in A♭ major

..

We delete the natural before the trilled minim, which is unnecessary in this context (the sign had already been placed next to the grace note of the same pitch). The natural is included in A, FE and EE and GE2 (→GE3GE4), it is only GE1 that is lacking it.

category imprint: Differences between sources

b. 62

composition: Op. 29, Impromptu in A♭ major

..

We add the cautionary e flat on the 3rd crotchet in the L.H. The sign was already completed in GE2 (→GE3GE4).

category imprint: Differences between sources; Editorial revisions

issues: Cautionary accidentals

b. 63

composition: Op. 29, Impromptu in A♭ major

 
 
..

The lack of the natural raising a2 to a2 in the ending of the 1st trill in A (→GE1), FE and EE is probably Chopin's oversight. The sign was added in GE2 (→GE3GE4).

category imprint: Interpretations within context; Differences between sources

issues: GE revisions

b. 63

composition: Op. 29, Impromptu in A♭ major

..

FE is lacking the d flat on the 3rd crotchet in the L.H.

category imprint: Differences between sources

issues: Errors in FE