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b. 19

composition: WN 17, Polonaise in B♭ major

No slur in JC

Slur in EF & PE

..

It is hard to determine whether the slur was omitted in JC or added in EF. The concordance of slurs in EF and PE may suggest the first possibility.

category imprint: Differences between sources

b. 19

composition: WN 17, Polonaise in B♭ major

..

In JC there is no  in front of c3, which in the original notation, in which the octave sign begins already from this note, is an evident error. Similarly in bar 46, which is not written out in JC.

category imprint: Interpretations within context; Differences between sources

issues: Cautionary accidentals , Errors of JC

b. 19

composition: WN 17, Polonaise in B♭ major

..

In JC there is no  lowering a3 into a3, which is a patent error; in the copy there is also no relevant sign before a2. PE is also missing a flat before the latter, which can correspond to the notation of [A], as Chopin often extended the validity of cautionary accidentals onto entire passages or scales of this kind.

The same applies to bar 46, marked in the sources as a repetition of bar 19. 

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Omission of current key accidentals , Errors of JC , Inaccuracies in PE

b. 19

composition: WN 17, Polonaise in B♭ major

No indication in JC & EF

leggieriss. in PE

..

The indication leggieriss., featured in PE, probably comes from [A] and constitutes one of a few improvements of notation introduced by Chopin into this autograph in the present bar. Cf. the remark concerning dynamic markings or slurs.

category imprint: Differences between sources

b. 20

composition: WN 17, Polonaise in B♭ major

No slur in JC & EF

Slur in PE

..

The slur linking the suspension with its resolution, which is evident from the point of view of phrasing, is featured only in PE. Cf. also the note concerning bars 20-21.

category imprint: Differences between sources