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in 
Chopin marked the last phase of crescendo both in FE, which we give in the main text, and in Ap. In the remaining sources it was the sign of FE that was reproduced, while in EE it was slightly shortened.
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category imprint: Differences between sources
issues: EE inaccuracies, Authentic corrections of FE
notation: Articulation, Accents, Hairpins