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Source:
p. 7, b. 115-124
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In A there is no accidental before the penultimate semiquaver. The flat returning e
2 was added in the proofreading of GE1 (→FE→EE, →GE2), perhaps on Chopin's demand. Moreover, a cautionary 
was added before e1 in the L.H.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: Omissions to cancel alteration, Authentic corrections of GE
notation: Pitch
Missing markers on sources:
GE1, A, GE1a, Morch, GE2, FE1, FE2, FES, FED, FEJ, EE1, EE2, EE3