Page:
Source:
p. 3, b. 14-22
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Prezentacja
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In A (→FC,FE) there is no 
lowering f
to f in the 3rd L.H. figure of each of these bars. Interestingly enough, Chopin was convinced that there was no need for an accidental here, since he crossed it out the first time (in b. 15). All naturals were added in GE and EE.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources; Source & stylistic information
issues: EE revisions, GE revisions, Omission of current key accidentals, Errors of A, Deletions in A, Errors repeated in FE
notation: Pitch
Missing markers on sources:
A, FC, FE1, FE2, FED, FEJ, FES, FESch, GE1, GE2, GE3, EE1, EE2, EE1a