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Rhythm

b. 26-30

composition: WN 17, Polonaise in B♭ major

Notation in JC

EF and PE

..

In JC, the two-voice notation of chord pairs in bars 26 and 30 is not complete – it concerns only the first chord of each pair (after all, the notation in bar 30 is inaccurate). In the main text we give the more accurate notation of EF and PE (in the latter a minor error in bar 26 was not avoided). Similarly in bar 28.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccuracies in PE

b. 26-28

composition: WN 17, Polonaise in B♭ major

Rhythm and a1 in #KJ

Rhythm and f1 in EF

Rhythm and f1 in PE

..

The single-voice notation of the 1st chord in bars 26 and 28 in JC and EF is probably inaccurate: the notation of JC in bars 25 and 27 is a proof that Chopin did not precisely determine the bass note's extensions in [AI]. In the main text we give the notation of PE in both bars in the form used in bar 26; it guarantees a consistent division into voices, in which the two-note chords struck on strong beats of bars 25-26 have the value of quavers. Cf. bar 30. 

As the 2nd quaver in bar 26, JC features the most probably erroneous a1. See the note related to the 4th quaver of that bar.

category imprint: Differences between sources

issues: Inaccuracies in PE

b. 26-30

composition: WN 17, Polonaise in B♭ major

Quavers f (g) in JC & EF

Crotchet in PE

..

The bass notes struck on the 2nd beat of the bar – in bars 26 and 28 and in bar 30 – are not extended in JC and EF. In the main text we include the more precise notation of PE. Cf. notes concerning bars 25-27 and 29-30.

category imprint: Differences between sources

b. 27

composition: WN 17, Polonaise in B♭ major

Dotted semiquaver in JC & EF

Semiquaver with rest in PE

..

In the main text we give the probably later version of PE with a rest instead of an extension of the previous semiquaver.

category imprint: Differences between sources

b. 28

composition: WN 17, Polonaise in B♭ major

Semiquaver in JC

Semiquaver in EF

Quaver in PE

..

The rest separating the first four-bar section, in B major, from the subsequent three bars in C minor is only in JC and EF. In the version of PE, based on the later autograph, Chopin resigned from this practically hardly noticeable detail of notation. In JC, the chord in the R.H. is written in a single-voice manner, as in bars 26 and 30.

category imprint: Differences between sources