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b. 4

composition: Op. 28 No. 12, Prelude in G♯ minor

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In A (→FC) the L.H. part is designated by the / mark as a repetition of the previous bar. Similarly the R.H. part in bar 22.

category imprint: Source & stylistic information

issues: Abbreviated notation of A

b. 4

composition: Op. 28 No. 12, Prelude in G♯ minor

..

We add a cautionary  in the main text. Chopin wrote a corresponding accidental in similar bar 52.

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals

b. 4

composition: Op. 28 No. 16, Prelude in B♭ minor

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In FC there is no accidental before the 2nd semiquaver in the 3rd group. The structure of the figuration and the  present two notes further (as well as analog. b. 20) made the reviser of GE realize the mistake of the copyist and add a

category imprint: Differences between sources

issues: GE revisions , Errors of FC

b. 4-18

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

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The majority of the groups of repeated quavers were written in A (→FCGE) as dotted crotchets provided with quaver tremolos. In A this is how the L.H. in the 2nd half of b. 4, 5, 7, 10-13 and 18 and the R.H. in the 2nd half of b. 10 were marked. A similar situation occurs in FC (→GE) – except b. 18. Such notation is not observed at all in FCI.

category imprint: Source & stylistic information

issues: Abbreviated notation of A

b. 4-5

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

First slur to a1 in A, literal reading

First slur to end of bar 4 in FC (→GE)

Continuous slur to bar 10 in FE (→EE)

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The range of the slur in b. 4 is unclear in A – it can be interpreted as a slur dragged to the a1 crotchet or as an unfinished slur/tenuto encompassing that crotchet along with the bottom voice quavers that fill it (as was reproduced by Fontana in FC). As it is slurs/tenutos that prevail in similar situations in the entire Prelude – particularly consistently from b. 65 on – in the main text we give such a slur. The continuous slur of FE (→EE), certainly contrary to the notation of A, probably resulted from the engraver's carelessness.

category imprint: Graphic ambiguousness; Differences between sources

issues: Errors in FE , Inaccurate slurs in A , Tenuto slurs