Issues : Inaccurate note pitch in A

b. 13

composition: Op. 25 No 4, Etude in A minor

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FE has an erroneous instead of as the 3rd quaver. This patent error could have been provoked by an inaccurate placement of this note in A. The mistake was corrected – perhaps by Chopin – in FED.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , Errors in FE , Annotations in FED , Inaccurate note pitch in A , Inaccuracies in A

b. 31

composition: Op. 25 No 4, Etude in A minor

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The last dyad in the bottom voice seems to be a third in A, as the bottom note is written slightly too low. The visible in FE traces of correction prove that it actually misled the engraver and it must have been corrected in print.

category imprint: Source & stylistic information

issues: Inaccurate note pitch in A , Authentic corrections of FE