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b. 15

composition: WN 17, Polonaise in B♭ major

No lower voice in JC

Two voices in EF

Two voices in PE

..

Lack of the lower voice in JC is certainly the copyist's oversight. The way of subscribing the last notes in PE suggests a simultaneous strike of the e1-csixth, which could correspond to Chopin's intention, as such an edition would faithfully render the notation of [A]. For such a rhythm of the lower voice could have been easily written as , we consider the notation of PE as inaccurate and we subscribe the notes according to their rhythmic values.

category imprint: Differences between sources

issues: Errors of JC , Inaccuracies in PE

b. 15-16

composition: WN 17, Polonaise in B♭ major

No slur in JC & EF

Slur in PE

..

The slur is featured only in PE.

category imprint: Differences between sources

b. 16

composition: WN 17, Polonaise in B♭ major

Grace note in JC

No grace note in EF

Grace note in PE, interpretation

..

Lack of the grace note in EF is most probably a result of Fontana's error in preparation of the base text (copy of [AI]). The difference in the grace note's form – non-slashed in JC, slashed in PE – has no practical meaning in this context, as Chopin often did not pay attention to this detail. The sharp before the ornament is a patent error of the engraver of PE.

category imprint: Interpretations within context; Differences between sources

issues: Errors in PE , Errors in Fontana's editions

b. 16

composition: WN 17, Polonaise in B♭ major

d1-b1 in JC & EF

d1-d2 in PE

d1-b1, our suggestion

..

PE features d2 as the upper note of the crotchet at the beginning of the bar. According to us, it is the so called Terzverschreibung, as using an incomplete chord in a typical cadenza formula ending an eight-bar section is very unlikely. Therefore, in the main text we give bwhich is present in JC and EF. We provide the note with a cautionary .   

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Terzverschreibung error , Errors in PE

b. 16

composition: WN 17, Polonaise in B♭ major

No indication in JC & EF

 in PE

..

We consider  featured only in PE to be authentic.

category imprint: Differences between sources