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. 21

composition: Op. 28 No. 17, Prelude in A♭ major

..

In FC (→GE) the first c2 note is a dotted crotchet. The mistake was probably provoked by the complicated layout of this bar, in which the d1-f1 third of the 2nd L.H. quaver is written on the top stave next to the c1-g1 fifth of the bottom R.H. voice, thus creating an illusion of a third quaver filling c2 of the top R.H. voice.

category imprint: Interpretations within context; Differences between sources

issues: Errors of FC , Errors repeated in GE

b. 21

composition: Op. 28 No. 17, Prelude in A♭ major

..

In FCI and A (→FE,FCGE1) there is no  raising g to g in the 1st L.H. chord. The patent inaccuracy was corrected in EE and GE2 (→GE3).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A , Errors repeated in GE , Errors repeated in FE

b. 21

composition: Op. 28 No. 17, Prelude in A♭ major

..

In GE the top notes of the 3rd and 4th quavers were misplaced, i.e. a third too low (3rd quaver, g-b-d1) or too high (4th quaver, g-f1-a1 when interpreted literally). In the manuscripts and GE those notes are placed on the top stave, among the R.H. quavers, which significantly hampers their interpretation.

category imprint: Interpretations within context; Differences between sources

issues: Errors in GE , Terzverschreibung error

b. 21

composition: Op. 28 No. 17, Prelude in A♭ major

Accent above a1 in A

No mark in FC (→GE) & EE

Accent under b in FE

..

The missing accent in FC (→GE) and EE are oversights of Fontana and of the engraver of EE. The mark having been moved to the side of noteheads in FE, i.e. in this case under the stave, is a frequent, routine revision; thus, the notation was left without a suggestion – certainly intended by Chopin – to accent the a1 note.

category imprint: Differences between sources

issues: Placement of markings , Errors in EE , FE revisions , Errors of FC

b. 22

composition: Op. 28 No. 17, Prelude in A♭ major

..

In FE (→EE1) there is an erroneous  before the bottom note of the sixth (e1). The mistake was corrected in all teaching copies bearing traces of being developed with Chopin. A corresponding correction was also entered into EE2.

category imprint: Interpretations within context; Differences between sources

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