FE1
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In A, bars 415 (from the 2nd beat), 416 and the 1st quaver in bar 417 are written an octave lower, since they were not encompassed with the octave sign. This patent mistake was corrected – perhaps by Chopin – already in GE1 (→FE→EE, →GE2).
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category imprint: Interpretations within context; Differences between sources
issues: Errors of A, Authentic corrections of GE
notation: Pitch