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b. 8-9

composition: Op. 28 No. 22, Prelude in G minor

Slur from semiquaver in A (→FE,FCGE)

Slur from crotchet in EE

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The inaccurate, later starting point of the slur in EE is most probably a mistake of the engraver.

category imprint: Differences between sources

issues: EE inaccuracies

b. 8-11

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

Slurs from 2nd to 6th quaver in A, literal reading

Slurs from 1st to 6th quaver in FC (→GE)

Slurs from 2nd quaver to next bar in FE (→EE)

Slurs from 2nd quaver to next bar suggested by editors

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When interpreted literally, 3 consecutive slurs of A reach only the last quaver in the bar; moreover, the starting point of the slur in b. 9 is also not entirely clear (we assume that it is the 2nd quaver). Due to the reasons discussed in b. 1-2, we consider them to be inaccurate; in the main text we generally adopt the slurs of FE (→EE), compliant with the manner in which Chopin would correct in A some slurs in similar figures. In b. 9-10 the notation of the topmost L.H. notes on the top stave and writing them closer to the b1 minim opens an additional interpretation of the L.H. slur as reaching that minim. We include that possibility in the main text, regarding the version of FE (→EE) as an equal variant.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A , FE revisions , Inaccuracies in FC

b. 8-12

composition: Op. 28 No. 20, Prelude in C minor

d1 in A (literal reading→FC,FE) & CGS

d1 in AB, ACh, GE, EE & FES

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The missing  restoring d1 is almost certainly an oversight of Chopin in A (→FC,FE), which is proven by the naturals in AB, ACh and the one added in b. 8 in FES. The accidentals were also added by the revisers of GE and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Omissions to cancel alteration , GE revisions , Errors of A , Errors repeated in FE

b. 8

composition: Op. 28 No. 19, Prelude in E♭ major

..

In the main text we add cautionary flats before the 3rd L.H. quaver (a) and the 6th R.H. quaver (a1).

category imprint: Editorial revisions

b. 8

composition: Op. 28 No. 15, Prelude in D♭ major

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The crossing-out visible in A reveals that the 1st quaver in the 2nd half of the bar was initially d

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A , Accompaniment changes