Ap
compare
b. 31
Neither in CLI nor in Ap there are cautionary naturals before the 2nd crotchet in the L.H. Chopin would add signs at different stages of the Etude's publication preparations – before B in the base text for FE, before F in a later proofreading.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Cautionary accidentals, Authentic corrections of FE
notation: Pitch