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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

b. 7-15

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

..

In GC – certainly in accordance with [A] – bar 7 is written in an abbreviated manner as a repetition of bar 6. Similar abbreviations appear also in the part of the L.H. in bars 10-11, 12 (the 2nd half of the bar) and 15.

category imprint: Differences between sources

issues: Abbreviated notation of A

b. 7-9

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

Two slurs in GC (→GE)

No slurs in FE

Slur in FE based on bars 195-196

Our alternative suggestion

Slur in EE, literal reading

Slur in EE, possible interpretation

..

Determining Chopin's intention concerning the slurring of bar 8 (together with adjacent chords) encounters difficulties. The composer's idea can be represented both in the source versions and in our suggestions, considering a possible oversight of the engraver of FE. It is the versions of GC (the main text) and two versions based on the reconstructed on the basis of the reprise slur of FE that we consider to be most reliable, as far as the sources are concerned, and pianistically natural.

category imprint: Graphic ambiguousness; Interpretations within context; Differences between sources; Corrections & alterations

issues: Errors in FE , Authentic corrections of EE