in 
The version of FE (→EE) could be considered a result of Chopin's proofreading. However, it can be a quite frequent so-called Terzverschreibung error, i.e. erroneously printing a note a third away from the correct one. In the main text we give the probably authentic, later version of FE. According to us, the earlier, yet undoubtedly authentic, version of A can be considered to be equal.
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category imprint: Differences between sources; Corrections & alterations
issues: Terzverschreibung error, Authentic corrections of FE
notation: Pitch