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Source:
p. 4, b. 39-50
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In the last group of semiquavers, in the place where FE (→GE,EE) has a b
1, in AI there is a c2. By introducing this clearly justified correction, Chopin did not check its result precisely – in FE (→GE1→GE1a,EE) there is no 
before c2, still necessary despite the change of the previous note from c2 to b1. This patent oversight was corrected in GE2 (→GE3→GE4→GE5).
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources; Corrections & alterations
issues: Errors in FE, Omissions to cancel alteration, GE revisions, Enharmonic corrections
notation: Pitch
Missing markers on sources:
AI, FE1, FE2, FED, FEJ, FES, GE1a, GE2, GE3, GE4, GE5, EE2, EE3, EE4, GE1