Issues : Omission of current key accidentals

b. 14

composition: Op. 26 No 2, Polonaise in E♭ minor

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There are no naturals rising a and d1 to a and d1 in A. Chopin's mistake resulted supposedly from a hasty correction—the composer initially marked the L.H. part in this bar as a repetition of the previous bar, and only after having spotted the diffrence on the 2. quavers of both bars wrote it out in full. The accidentals were added in FE1 and all the subsequent editions.

category imprint: Interpretations within context; Differences between sources

issues: Errors resulting from corrections , Omission of current key accidentals , Errors of A , Authentic corrections of FE

b. 15

composition: Op. 10 No 7, Etude in C major

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In A (→FE) there is no  raising f2 to f2 at the end of the bar. This patent oversight (cf. similar bar 7) was corrected in GE and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , GE revisions , Omission of current key accidentals , Errors of A

b. 15

composition: Op. 25 No 1, Etude in A♭ major

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In A, CDP, and FE, there is no  raising d1 to d1. This patent oversight was corrected in GE and EE. AI also includes the correct text.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Inaccuracies in FE , GE revisions , Omission of current key accidentals

b. 15

composition: Op. 25 No 7, Etude in C♯ minor

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In GC and FE there is no  lowering c to c. This patent inaccuracy was corrected in GE and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Omission of current key accidentals , Errors of GC

b. 15-18

composition: Op. 28 No. 8, Prelude in F♯ minor

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In A (→FC,FE) there is no  lowering f to f in the 3rd L.H. figure of each of these bars. Interestingly enough, Chopin was convinced that there was no need for an accidental here, since he crossed it out the first time (in b. 15). All naturals were added in GE and EE

category imprint: Interpretations within context; Differences between sources; Source & stylistic information

issues: EE revisions , GE revisions , Omission of current key accidentals , Errors of A , Deletions in A , Errors repeated in FE