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p. 5, b. 115-146
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b. 138
In A (→GE), there is a entered before d flat1 in the 1st chord. That sign, totally unnecessary in the context, was removed in the proofing of FE (→EE), perhaps at Chopin's request. It is conceivable that the much more clearly written lowering f1 to f flat1 in A was, in Chopin's intention, to replace the sign put mistakenly before d flat1.
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category imprint: Differences between sources
issues: Cautionary accidentals, Authentic corrections of FE
notation: Pitch