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The 
sign in FE (→GE,EE), unjustified in this context (cf. analogous bars 4 and 39), is probably a result of an overlap of two mistakes:
- Chopin overlooked this place, while reducing the number of
signs in the autograph prepared as the base for printing (Ap has 11 signs, including one in analogous bar 4; in the final version Chopin either did not include them at all or he replaced them with accents); - the engraver of FE put instead of ; in the entire Op. 10 a similar mistake was committed on a number of occasions (in the Etudes in: E major, No. 3, bar 54, C
minor, No. 4, bars 1, 8, 16, 26, 54, E
minor, No. 6, bars 21 and 32, C minor, No. 12, bar 37).
Due to these reasons we omit this in the main text. Cf. bar 27.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Errors in FE, fz – f
notation: Verbal indications
