Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Rhythm
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


Rhythm

b. 55

composition: WN 17, Polonaise in B♭ major

..

In PE, five chords were written on the upper staff; we do not include this kind of notation, as it complicates it unnecessarily – the ensuing part of the L.H. is written in the treble clef on the lower staff. In JC, the 1st quaver is not combined with the subsequent ones. In EF, each of the first two quavers is written down separately. Similarly in bar 91. 

category imprint: Source & stylistic information

b. 58

composition: WN 17, Polonaise in B♭ major

No tie to d in JC & PE

Tie to d in EF

..

The tie sustaining in this bar is probably an arbitrary addition by Fontana, perhaps modelled on original version of bar 59.

category imprint: Differences between sources

b. 59

composition: WN 17, Polonaise in B♭ major

Tied d in JC

Tied in EF

No tied d in PE

..

In the main text we give the simplest notation of PE. Generally, all notations are equal, as far as the sound is concerned.

category imprint: Differences between sources

b. 60

composition: WN 17, Polonaise in B♭ major

Dotted semiquaver in JC

Dotted semiquaver in EF

Semiquaver and rest in PE

..

The first chord in JC and EF is a dotted semiquaver; moreover, there is no rest, which would be superfluous in this situation. It is certainly an earlier version. In the main text, we give the version of PE with a rest after the 1st chord. The above described rhythmic difference is matched with varying performance markings – a slur in EF and a wedge and slur in PE.  

category imprint: Differences between sources

b. 60

composition: WN 17, Polonaise in B♭ major

category imprint: Interpretations within context; Differences between sources

issues: Errors of JC