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b. 378

composition: (Op. 4), Sonata in C minor, Mvt IV

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In A the  to the top note of the 1st R.H. chord (f2) is missing. The accidental was added in GE (→FE,IE). In EE1 there is no accidental before this chord, which was corrected in EE2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Errors in EE , GE revisions , Inaccuracies in A

b. 378

composition: (Op. 4), Sonata in C minor, Mvt IV

No sign in A (→GEFE,EE1,IE)

Arpeggio sign in EE2

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In EE2 an arpeggio was added before this chord, which seems to be a mistake.

category imprint: Differences between sources

issues: EE revisions

b. 379

composition: Op. 39, Scherzo in C♯ minor

category imprint: Source & stylistic information

issues: GE revisions , Errors of GC

b. 379-380

composition: Op. 21, Concerto in F minor, Mvt III

No slurs in A

Slurs in GE1 (→FE)

Slur in EE & GE2

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It is difficult to assume that the slurs in the L.H. appearing in GE1 (→FE) could have been added in this form by Chopin – they are contrary to the authentic slur in the R.H., whereas their range overlaps with the beams of the group of quavers. Therefore, it is most probably a revision, which also questions the authenticity of the slurs added in GE1 in the previous two bars. The revisers of EE and GE2 replaced them with a two-bar slur modelled after the slur of the R.H.; it specifies the notation, yet it does not follow from the notation of A.

category imprint: Differences between sources

issues: EE revisions , GE revisions

b. 379-380

composition: Op. 11, Concerto in E minor, Mvt III

No slur in FE (→GE)

..

The slur in EE was most probably added after the slur featured in the analogous situation four bars earlier. It would be justified if it were not for the fact that the slur in bars 375-376 could be inaccurate. 

category imprint: Differences between sources

issues: EE revisions