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. 12-13

composition: Op. 28 No. 21, Prelude in B♭ major

No slur in FC (→GE)

..

In A, the slur starting in bar 12, last in line, indicates a continuation, but its ending is absent from bar 13. We adopt a natural contextual interpretation in accord with the FE (→EE) version. In FC (→GE), the copyist overlooked this slur like the previous one.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A , Errors of FC , Uncertain slur continuation

b. 12-14

composition: Op. 28 No. 21, Prelude in B♭ major

No fingering in A (→FE,FCGE)

Fingering in EE

category imprint: Differences between sources

issues: EE revisions

b. 12-13

composition: Op. 28 No. 21, Prelude in B♭ major

Fingering written into FES

No teaching fingering

..

In the main text we include the fingering written by Chopin into FE.

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FES

b. 12

composition: Op. 28 No. 21, Prelude in B♭ major

..

In the main text we give a  raising f1 to f1 after A (→FCGE). The accidental is absent in FE, which can almost certainly be attributed to the distraction of the engraver of FE, who forgot to insert a  in the place between the notes left especially for this purpose. Chopin added a  in FED; it was also added in EE

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , EE revisions , Errors in FE , Annotations in FED

b. 12-13

composition: Op. 28 No. 21, Prelude in B♭ major

   in A (→FCGE)

No markings in FE (→EE)

..

The pedalling markings, deviating from the scheme of the previous bars, were intended by Chopin, which is evidenced by the mark at the end of b. 12 having been crossed out. However, it cannot be ruled out that the uncommon placement of the markings could have been the reason they were overlooked by the engraver of FE, who, having his doubts to the correctness of the notation of A, preferred to avoid a possible mistake.

category imprint: Differences between sources

issues: Errors in FE