Issues : Last key signature sign

b. 20

composition: WN 17, Polonaise in B♭ major

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In JC, the initial e is provided with a flat, which is unnecessary in this context.

category imprint: Source & stylistic information

issues: Cautionary accidentals , Last key signature sign

b. 20-22

composition: Op. 21, Concerto in F minor, Mvt III

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In the main text we add cautionary flats before b2 in bar 20, d1 in bar 21 and e1(2) in bar 22. In turn, we remove the  before d2 in bar 22, written by Chopin yet unnecessary in this place.

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign

b. 22

composition: WN 17, Polonaise in B♭ major

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JC has a cautionary  before the 4th semiquaver, a1. In the light of the currently binding rules, a sign in this position is superfluous.

category imprint: Source & stylistic information

issues: Cautionary accidentals , Last key signature sign

b. 22

composition: Op. 35, Sonata in B♭ minor, Mvt I

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GC and FE1 (→FE2FE3) do not include naturals before the octave on the 4th quaver of the bar. The flats before g2 and g1 in the 2nd half of the bar prove Chopin's oversight. The naturals were added in GE and EE, as well as in FE4.

category imprint: Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Omission of current key accidentals , FE revisions , Last key signature sign , Errors of GC

b. 22

composition: Op. 31, Scherzo in B♭ minor

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In A one can see deletions of flats (cautionary?) before the G1-G octave. The same applies to analog. b. 154 and 605.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Last key signature sign