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b. 66

composition: WN 17, Polonaise in B♭ major

..

PE has a quaver rest in this place, which is a patent error. The same applies to bar 102.

category imprint: Interpretations within context; Source & stylistic information

issues: Errors in PE

b. 67

composition: WN 17, Polonaise in B♭ major

f in JC & PE

in EF

..

The compatibility of the version of JC and PE, in which the 5th semiquaver is a f, points to the error (or revision) of EF.

category imprint: Differences between sources

b. 67

composition: WN 17, Polonaise in B♭ major

No slurs in JC & EF

Slurs in PE

..

In the main text we give the slurs of PE. In the remaining sources, the notation is less accurate in this regard.

category imprint: Differences between sources

b. 67

composition: WN 17, Polonaise in B♭ major

Small crotchet in JC

Acciaccatura in EF

No ornament in PE

..

Lack of the grace note in PE does not seem to be a mistake – Chopin probably resigned from it, while writing [A] (maybe he did not want to repeat the ploy from bar 16 and analog.?). It is hard to determine which form of the grace note – a crotchet or a slashed quaver – was featured in [AI]. Moreover, Chopin was not too accurate in writing grace notes: small non-slashed quavers, and even crotchets, may sometimes indicate short ornaments, which, according to the rules, should have a form of a slashed quaver. 

category imprint: Differences between sources

b. 67

composition: WN 17, Polonaise in B♭ major

No marks in JC

  in EF

Accent in PE

..

In the main text we give the accent over the crotchet visible in PE and most probably coming from [A]. In EF, a similar effect was marked with the help of a pair of   signs; their authenticity is very unlikely.

category imprint: Differences between sources