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Source:
p. 5, b. 104-124
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In A at the beginning of the 2nd half of the bar the 
to the R.H. top voice crotchet is missing. Chopin's patent oversight was corrected in GE (→FE,EE,IE).
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: GE revisions, Omission of current key accidentals, Errors of A
notation: Pitch
Missing markers on sources:
A, EE2, EE1, IE1, GE1, FE1