Issues : Cautionary accidentals

b. 24-25

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

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In the main text we omit the sharps before the outer notes of the chords on the 5th L.H. quaver, unnecessarily repeated in the final version in both bars, while in FCI in b. 24. 

category imprint: Differences between sources; Editorial revisions

issues: Cautionary accidentals

b. 28-30

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

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In A Chopin inserted cautionary naturals before c1 in b. 28 and 30, repeated in all subsequent sources (they are absent in FCI). In the main text we keep only the former of those dispensable accidentals, adding a  before c2 in the R.H. part for symmetry.

category imprint: Differences between sources; Editorial revisions

issues: Cautionary accidentals

b. 33

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

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In A (→FE) there are only 3 flats before the 1st chord – e2c2 in the R.H. and a1 in the L.H. In FC and EE1 lowering c1 to c1 and a cautionary one before a were added, while in GE and EE2 a cautionary  before e1 was also added.
The necessary  lowering c1 to c1 was added in FED.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , EE revisions , Annotations in FED , Accidentals in different octaves , Cautionary accidentals , Fontana's revisions , Inaccuracies in A , Errors repeated in FE

b. 35

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

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In the main text we add a cautionary  before d1 and a  before c2. The flat is present in FCI.

category imprint: Differences between sources; Editorial revisions; Corrections & alterations

issues: Cautionary accidentals

b. 51-54

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

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In b. 51 and 53-54, A and all the remaining sources include various inaccuracies concerning accidentals – oversights but also dispensable repetitions of accidentals. The greatest number of inaccuracies is to be found in FCI (6 naturals are missing), while EE is the only source that contains all necessary accidentals (and 4 unnecessary naturals).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Cautionary accidentals , Fontana's revisions