GE1op
compare
in 
Same as in bars 40 and 56, Chopin hesitated whether the last quaver in bars 104 and 120 is to be a f
2 or f
2 and the final decision is not unambiguous. In the main text, we give the version with f2, written in A (→FE) and made more precise by the way we adopted in our system with a cautionary 
. The version with f2, as well as the notation without an accidental, leaving a minor margin of uncertainty, can be considered to be equal variants.
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See b. 40-56
category imprint: Differences between sources; Editorial revisions; Corrections & alterations
notation: Pitch