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b. 10

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

..

In A the  to the 5th L.H. quaver is missing (d). Chopin's patent inaccuracy was corrected in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

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

b. 15

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

..

The  to the bottom note of the chord on the 3rd beat omitted in A (→GEEE,IE) was added only in FE.

category imprint: Interpretations within context; Differences between sources

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

b. 16

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

..

In the main text we add cautionary flats to b1 and d2.

category imprint: Editorial revisions

b. 17

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

..

In the main text we omit the unjustified  (cautionary?) to d1 at the beginning of the bar, present in all sources. On the other hand, we add a  restoring a1 on the 4th beat of the bar, omitted by Chopin. It was also added in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Omissions to cancel alteration , GE revisions , Cautionary accidentals , Errors of A , Last key signature sign

b. 19

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

f1 in chord in sources

f1, our alternative suggestion

..

The main text is a version of the sources interpreted literally. Our alternative suggestion presents another possible interpretation of this notation, assuming Chopin's oversight of the . Assuming a mistake in a place that does not contain any errors is justified by the following conditions:

  • the B minor chord enriches the harmonic sequence in bars 18-19 with a clearly new quality, while the b-d-f chord was already audible on the 4th quaver in bar 18, as well as – enriched with a tie to g – in bar 19;
  • leaving out an accidental in this kind of context is one of Chopin's most frequent mistakes (cf., e.g. bar 31).

category imprint: Editorial revisions

issues: Omissions to cancel alteration , Errors of A