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. 58

composition: Op. 12, Variations in B♭ major

Crotchet a1 in FE (→EE)

Dotted crotchet in GE

..

In the main text we include the augmentation dot to the a1 crotchet added in GE. Its absence is most probably a mistake, since there is no reason for this a1 not to go smoothly to b1.

category imprint:

issues: GE revisions

b. 60

composition: Op. 12, Variations in B♭ major

No slur in FE

Slur in GE & EE

..

Taking into account the articulation markings in the parts of both hands in the preceding passage (staccato dots) and in the pair of chords ending the theme (slurs), we consider the absence of the L.H. slur in the discussed place to be a defect of notation (because of Chopin or the FE engraver). Therefore, in the main text we include the addition introduced by GE and EE.
See also bar 62.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions

b. 62

composition: Op. 12, Variations in B♭ major

Wedge in FE (→EE)

No markings in GE

Our suggestion

..

We assume that the wedge in FE (→EE) was supposed to refer to both octaves or that the other one was forgotten. However, this articulation should undoubtedly be implemented by both hands, hence in the main text we suggest the supplemented FE text (→EE). The absence of the mark in GE is most probably an oversight. See also the note in bar 60.

category imprint: Differences between sources; Editorial revisions

issues: Inaccuracies in FE , Errors in GE

b. 63-65

composition: Op. 12, Variations in B♭ major

No slurs in FE (→GE,EE)

Slurs suggested by the editors

..

We consider the missing slurs in the L.H. top voice in bars 63-65 in FE (→GE,EE) to be Chopin's oversight (unless it is the engraver's one). Admittedly, the theme (bars 33-36 and analog.) is devoid of L.H. slurs, but in that case this voice moves in the same rhythm as the R.H. part, which naturally suggests the same phrasing. The impression that we are dealing with an oversight is enhanced by the presence of a slur in bar 66 and by numerous markings in the following bars, including slurs in analogous phrases in bars 81-86. Therefore, in the main text we suggest supplementing the missing slurs. 

category imprint: Editorial revisions

b. 67

composition: Op. 12, Variations in B♭ major

Slur in FE (→GE,EE)

Longer slur suggested by editors

..

The shorter slur of the sources is most probably inaccurate, since there is no reason for one of the few similar accompaniment figures in bars 67-69 to be marked differently than the others (without access to [A] it is difficult to say which version of slurs reproduces the Chopinesque notation more accurately – we assume that it is the more numerous slurs that are correct). Therefore, in the main text we prolong the slur over the first group of quavers, adapting it to the further ones.

category imprint: Editorial revisions

issues: Inaccuracies in FE