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. 121-122

composition: Op. 25 No 5, Etude in E minor

No slur in FC (→GE) & FE

Slur in EE

..

The slur of EE is probably authentic, which would support the interpretation of the slur in bars 122-123 as beginning from the 2nd crotchet. However, an editorial revision cannot be entirely excluded here (the same applies to the staccato dot under the bass at the beginning of bar 122).

category imprint: Differences between sources

b. 121-123

composition: Op. 35, Sonata in B♭ minor, Mvt I

..

In GC, in the part of the L.H., only the top notes of the octaves were written. The bottom ones were written in an abbreviated manner with the help of the con 8va - - - indication.

category imprint: Differences between sources; Source & stylistic information

issues: Abbreviated octaves' notation

b. 121-123

composition: Op. 35, Sonata in B♭ minor, Mvt I

No sign in GC (→GE) & FE1 (→FE2EE1)

 in FE3 (→FE4) & EE2

..

Chopin added the over two-bar-long  hairpin in the proofreading of FE3 (→FE4). It was also repeated in EE2. Similarly in bars 129-131.

category imprint: Differences between sources

issues: Authentic corrections of FE

b. 121-122

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

No pedal change in A

Pedal change in FE (→GE,EE)

..

The pedalling of FE (→GE,EE) is certainly erroneous.

category imprint: Differences between sources

issues: Errors in FE

b. 121-122

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

Slur in A (→FEEE)

No slur in GE

..

The missing slur in the L.H. in GE is most probably a result of an inaccuracy of the engraver of FE, who overlooked this sign (A is poorly legible in this place due to deletions). In the last proofreading of FE (→EE), the slur was added, probably by Chopin.

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , Authentic corrections of FE