Issues : Errors of JC
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b. 1
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composition: WN 17, Polonaise in B♭ major
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In JC, the note f 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 The mistake of Ludwika is also revealed by the notation of the Polonaise's incipit in the inventory "Unpublished compositions" she made.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 |
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b. 1
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composition: WN 17, Polonaise in B♭ major
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In JC, the third e category imprint: Source & stylistic information issues: Errors of JC |
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b. 3-4
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composition: WN 17, Polonaise in B♭ major
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From the musical point of view, the version of JC seems to be very dubious: the indication [con] 8 - - - is probably written in a wrong place – it was supposed to include the entire bass progression in bar 4. However, most probably we are dealing here with a misunderstanding of the corrections of the entire introduction (bars 1-8) written in a short cut manner in [AI]. The same applies to the version of EF. category imprint: Differences between sources issues: Errors of JC |
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b. 5-6
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composition: WN 17, Polonaise in B♭ major
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In JC, there are no flats lowering a and a1 into a category imprint: Differences between sources issues: Cautionary accidentals , Omission of current key accidentals , Errors of JC |
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b. 5
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composition: WN 17, Polonaise in B♭ major
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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 |
1-g1 is a dotted crotchet, which is a patent error.
before a in bar 7. 
