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b. 278

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

..

In A in the 2nd half of the bar there are no accidentals in the R.H. part. The omitted flats to d3 and d4 were added in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

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

b. 281

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

..

In A (→GEEE1,IE) the  restoring e1 is missing. Chopin's patent oversight was corrected only in FE and EE2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Omissions to cancel alteration , Errors of A , FE revisions , Errors repeated in GE , Errors repeated in EE , Errors repeated in IE

b. 282

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

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 283-284

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

..

In the main text we omit the cautionary  to a1 in bar 283 (present in all sources), and we add it in bar 284. We also include the  to a3 at the end of bar 284 added in GE (→FE,EE,IE).

category imprint: Differences between sources; Editorial revisions

issues: GE revisions , Cautionary accidentals

b. 286

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

d3 in A (→GEFE,EE,IE), literal reading

d3, contextual interpretation

..

When interpreted literally, the version of the sources, featuring d3 as the 6th quaver, although harmonically possible, is almost certainly erroneous. This is supported by the comparison with analogous bar 288 and 77 and 79, as well as by the role bars 281-292 play in the structure of the finale – preparing the entry of the secondary theme in the key of F minor by consolidating the C chord as the dominant to this key and by reducing harmonic variability and motivic complexity. The highly likely oversight of the  is also indicated by many similar situations in which Chopin forgot that the earlier accidentals were still valid, even the ones put to the preceding note – cf., e.g. bar 5 and 6. Taking into account the above, in the main text we suggest here d3

category imprint: Interpretations within context; Editorial revisions

issues: Accidentals in different octaves , Omissions to cancel alteration