A
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b. 51
In the proofreading of FE1 Chopin changed the 4th quaver in the L.H. – the a-e1 fifth – to an a-c1 third. The fact of leaving e1 in analogous bar 83 has to be considered Chopin's oversight or the engraver's mistake.
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See b. 50
category imprint: Differences between sources; Corrections & alterations
issues: Authentic corrections of FE
notation: Pitch