A
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b. 231
The presence of e1 in A is obvious; nevertheless, it seems highly likely that it was overlooked by the engraver of GE – the notehead is slightly thinner than the adjacent ones; what is more, it is misplaced, since it is directly under f1, and not to the left of it, as required by the rule (Chopin would generally write seconds in such a way all his life).
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category imprint: Differences between sources
issues: Errors in GE
notation: Pitch