Issues : Last key signature sign

b. 8-24

composition: Op. 64 No 3, Waltz in A♭ major

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In the main text we omit the cautionary  next to din bar 8, present in the sources. Chopin probably feared that bat the beginning of the bar may trigger an association with d2. Similarly in bar 24, which in A is marked as a repetition of bar 8. 

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign

b. 8

composition: Op. 25 No 12, Etude in C minor

a in FC (→GE) & EE2 (→EE3)

a in FE & EE1

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It is hard to assume how the difference between the versions of FE and EE1 and these of FC (→GE) and EE2 (→EE3) occurred. In FC, the naturals introducing are written by the copyist, which means that they were present in the manuscript, probably an autograph copied by Fontana. Therefore, the absence of these signs in FE and EE1 could be explained by their later deletion by Chopin in the base texts to these editions. Hence a regular, chromatic progression of minor thirds in the middle voices would be then introduced only in bar 54 as a kind of variation of the repetition of this place. However, not being certain if it was so – the versions of FE and EE1 could have been results of mistakes – in the main text we give the undoubtedly authentic version of FC (→GE). 

category imprint: Differences between sources

issues: EE revisions , Errors in FE , Errors in EE , Last key signature sign

b. 9

composition: Op. 10 No 5, Etude in G♭ major

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We add a cautionary  before d1; it was already performed in GE and EE4. We remove the unjustified  before c1 in the 2nd chord; the change was already introduced in GE and EE4.

category imprint: Differences between sources

issues: GE revisions , Cautionary accidentals , Last key signature sign

b. 10

composition: WN 17, Polonaise in B♭ major

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JC has a  before a in the chord on the 3rd beat of the bar. In this harmonic context, the sign is unjustified. 

category imprint: Differences between sources

issues: Cautionary accidentals , Last key signature sign

b. 11

composition: Op. 22, Andante spianato

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In the main text we omit the superfluous cautionary  before the 3rd semiquaver, f, present in all sources.

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign