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b. 7

composition: Op. 26 No 1, Polonaise in C♯ minor

Slur from 2nd beat in A (→FEGE1,EE)

Slur from first beat in GE2 (→GE3GE4GE5)

..

In GE2 (→GE3GE4GE5) the beginning of the slur was arbitrarily moved over the 1st note of the bar, where the previous slur simultaneously ends. Similarly in bar 32.

category imprint: Differences between sources

issues: GE revisions

b. 7-10

composition: Op. 25 No 10, Etude in B minor

Long accents in GC & EE

Different accents in FE

Short accents in GE

..

Three out of four accents in GC are undoubtedly long accents, the fourth one (in bar 8) may be interpreted as either long or short. In GE they were reproduced as short. EE includes distinct long accents in all these bars, FE – only in bars 9-10, yet the one in bar 7 may also be considered as long. Therefore, it seems that the use of long accents by Chopin is much more likely here. 

category imprint: Graphic ambiguousness; Differences between sources

issues: Long accents

b. 7-8

composition: Op. 25 No 10, Etude in B minor

..

In the 2nd half of the bar the sources repeat the sharps before A1-A and a-a1. In the main text we delete the unnecessary signs.

category imprint: Editorial revisions

issues: Cautionary accidentals

b. 7-8

composition: Op. 25 No 12, Etude in C minor

 in FC (→GE1)

 in FE & EE

 in GE2 (→GE3)

..

It is unknown who interpreted Chopin's notation more accurately – Fontana in FC (→GE1) or the engravers of FE and EE. The version of GE2 (→GE3) is certainly non-authentic (and erroneous). The authenticity of the version of FC is additionally supported by the compatibility of the range of the hairpins in both analogous places (here and in bars 53-54).

category imprint: Differences between sources

issues: GE revisions

b. 7-8

composition: Op. 35, Sonata in B♭ minor, Mvt I

 in GC (→GE) & EE2

 in bar 8 in FE (→EE1)

..

The fact of beginning the  hairpin in FE (→EE1) later can be justly considered to be an inaccuracy related to the abbreviated notation of bar 7 in [A] and layout of the text in FE, in which bar 8 opens the 2nd line.

category imprint: Differences between sources

issues: Inaccuracies in FE