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b. 26

composition: Op. 28 No. 24, Prelude in D minor

..

GE has erroneously instead of as the last L.H. note.

category imprint: Differences between sources

issues: Errors in GE , Terzverschreibung error

b. 26

composition: Op. 28 No. 24, Prelude in D minor

Slur from c1 in A (→FE,FCGE)

Slur from e1 in EE

..

The later starting point of the slur in EE is probably a result of a minor inaccuracy of FE, in which the slur is moved to the right, which could have confused the engraver of EE.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccuracies in FE , EE inaccuracies

b. 27-28

composition: Op. 28 No. 24, Prelude in D minor

Slurs in A (literal reading→FEEE)

Slurs in FC (→GE)

Slurs in FED, possible interpretation

Slur suggested by the editors

..

The slurring of A in b. 26-27 is ambiguous – the slur in b. 26 (ending the line), led over the notes, certainly suggests that it should be continued, which is, however, not confirmed by the beginning of b. 27, in which only the initial slur is finished (it was crossed out in b. 26), under the notes. The fact that the ending of the bottom slur was not crossed out and that the top one was not continued proves that Chopin did not control the slurs in b. 27 after having introduced the corrections into b. 26. According to us, the aim of those changes was to combine the new slur in b. 26 with a slur running further, until the end of the phrase in b. 31, in accordance with the unequivocal slurring of an analogous phrase in b. 8-13. Therefore, in the main text we suggest one slur over b. 26-31. It seems that such an interpretation is confirmed by the entry in FED – the mark over the 2nd half of b. 27 may indicate that the slur should be prolonged, i.e. it should start earlier, from the tied dotted b1 quaver (consequently, we obtain a notation equivalent to a continuous slur).
In FE (→EE) the slurs of A were interpreted in the simplest manner possible (yet making sense), which can be considered an acceptable variant. In turn, the slurring of FC (→GE), clearly contrary to A, cannot be authentic.

category imprint: Graphic ambiguousness; Differences between sources

issues: Annotations in teaching copies , Annotations in FED , Inaccurate slurs in A , Errors of FC , Uncertain slur continuation

b. 27

composition: Op. 28 No. 24, Prelude in D minor

..

A is missing the  raising b1 to b1. The patent inaccuracy was corrected both in FC (→GE) and FE (→EE).

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals , Errors of A , FE revisions , Fontana's revisions

b. 28-29

composition: Op. 28 No. 24, Prelude in D minor

   in A (→FC,FEEE)

No markings in GE

..

Missing the two consecutive pedal changes is undoubtedly an error of GE.

category imprint: Differences between sources

issues: Errors in GE