Page:
Source:
p. 7, b. 75-80
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The 
returning e
3 in the descending fragment of the roulade is absent in all sources, which is undoubtedly Chopin's mistake. EE added flats restoring e2 and d2 at the end of the bar – an addition justified in the original notation with the use of an octave sign in the uppermost fragment of the roulade.
Compare the passage in the sources»
category imprint: Interpretations within context; Editorial revisions
issues: EE revisions, Omissions to cancel alteration
notation: Pitch
Missing markers on sources:
A, Morch, FE1, FE2, FED, FEJ, FES, GE1, GE1a, GE2, EE1, EE2, EE3