mUltimate Chopin

Op. 28 No. 17, Prelude in A♭ major

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b. 50

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

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FE overlooked the  before the minim at the beginning of the bar (a2). The accidental was supplemented in EE, FED and FES.

category imprint: Interpretations within context; Differences between sources

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

b. 50-51

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

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In FCI the structure of all the accompanying quavers in b. 50 (from the 2nd to the 6th) is similar – 3 notes each in the part of each of the hands, hence c2 is present in all R.H. chords, while the chromatic step of the bass from the 4th quaver in b. 50 to the 1st quaver in b. 51 is not doubled in the bottom octave.

category imprint: Differences between sources; Corrections & alterations; Source & stylistic information

issues: Accompaniment changes , Bass register changes

b. 51

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

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In FCI the b1 notes on the 2nd and 3rd quavers in the bar are assigned to the L.H. The crossings-out visible in A reveal that Chopin moved them to the R.H. only when writing A.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes

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

b. 52

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

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In A (→FC,FE) in this bar Chopin inserted cautionary accidentals only before the first notes in both hands – d and b2. In the main text we also add accidentals before the 2nd quaver and the 2nd beat of the bar. Some of them were already added in EE1 (flats before b-b1 on the 2nd quaver and before e) and in GE and EE2 (the same as in EE1 as well as a  before a1 and a  before f2). Moreover, GE and EE2 added a  before e2.
All the aforementioned accidentals in the bottom R.H. voice –  before a1,  before f2 and  before e2 – as well as a  before e are also to be found in FCI.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: EE revisions , GE revisions , Cautionary accidentals