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Rhythm

b. 1

composition: WN 17, Polonaise in B♭ major

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In JC, the note at the beginning of the piece (the upbeat) is notated as a grace note, which is certainly a mistake. It is revealed by both the quaver rest in the R.H., under the grace note which does not make sense, and the compatible version of the remaining sources which have a quaver in that place. The mistake of Ludwika is also revealed by the notation of the Polonaise's incipit in the inventory "Unpublished compositions" she made.  

category imprint: Differences between sources

issues: Errors of JC

b. 1

composition: WN 17, Polonaise in B♭ major

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In JC, the third e1-gis a dotted crotchet, which is a patent error.

category imprint: Source & stylistic information

issues: Errors of JC

b. 1-6

composition: WN 17, Polonaise in B♭ major

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In JC, the components of some out of the two-part written chords in the R.H. are linked with an additional stem. It is entirely clear in the case of the chords on the 2nd beat of bars 1-3 and the last chord in bar 5; the notation of the chords on the 2nd beat of bars 5-6 is less precise. It is hard to determine if it corresponds to the notation of [AI], yet such a possibility cannot be excluded. Assuming a possible authenticity of this notation, there arises a problem of its interpretation: in the case of chords on the 2nd beat of the bar, a common stem may indicate an incorporation of the lower note of the third to the 1st quaver of the lower voice or, on the contrary, an extension of the 1st quaver. In the editions, there are no traces of this notation detail.

category imprint: Source & stylistic information

b. 4

composition: WN 17, Polonaise in B♭ major

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On the last beat of the bar, EF has crotchets in the parts of both hands. The compatible rhythms of JC (based on [AI]) and PE (based on [A]) give rise to doubts over the authenticity of the version included in EF

category imprint: Differences between sources

b. 5

composition: WN 17, Polonaise in B♭ major

Rhythm in JC read literally

JC (contextual interpretation), PE & EF

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Rhythmic values in the part of the R.H. in JC are not erroneous, yet a mistake of the copyist while writing such a rhythm which is in the remaining sources is more plausible. 

category imprint: Interpretations within context; Differences between sources

issues: Errors of JC