Issues : Errors of JC

b. 68

composition: WN 17, Polonaise in B♭ major

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JC lacks all four dots extending the semiquavers on the 1st beat of the bar. It is a patent error.

category imprint: Interpretations within context; Differences between sources

issues: Errors of JC

b. 70

composition: WN 17, Polonaise in B♭ major

e3 in JC

f3 in EF & PE

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In JC, the last note in this bar is an e3. The mistake is revealed by the shape of the relevant fragment of figurations in the next bar, and first of all, by the compatible version of EF and PE.

category imprint: Interpretations within context; Differences between sources

issues: Errors of JC

b. 71

composition: WN 17, Polonaise in B♭ major

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In EF first three groups of demisemiquavers are written with an octave sign. In JC the notes are written in the same way, yet the octave sign was omitted, which is a patent error. In this graphic layout the f2 note at the beginning of the 4th group requires the  sign to be repeated, which actually is featured both in JC and EF

category imprint: Differences between sources; Source & stylistic information

issues: Errors of JC

b. 71

composition: WN 17, Polonaise in B♭ major

in JC

in EF & PE

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The note in JC is most probably the copyist's error, which is revealed by which is present both in EF and PE. In the two remaining similar phrases (bars 62-63 and 74-75), the chord on which the second bar is based differs significantly from the chord in the first bar; adopting the note as the bass note would reduce the difference mainly to the omission of e1, which does not seem to change the harmonic content.

category imprint: Differences between sources

issues: Errors of JC

b. 71

composition: WN 17, Polonaise in B♭ major

a1 in chord in JC

f1 in EF & PE

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In JC, the highest note of the chord could be considered as the so-called Terzverschreibung if it was not for the  raising f1 into f1 written only before the next chord. However, if we assume that JC copied the text of [AI] correctly, the compatible versions of EF and PE seem to confirm Fontana's access to an additional source of authentic versions, probably corrections of [AI], introduced already after JC had been written.

category imprint: Differences between sources

issues: Terzverschreibung error , Errors of JC