The version of EE was introduced – most probably by Chopin – in the base text to this edition. The version with d1 offers a more distinct harmonic progression of the accompaniment, in the version with f1 thanks to the omission of the doubling of the leading note, the sound of the ending of the bar is smoother. It cannot be excluded that Chopin was not entirely sure about each of these versions (Chopin's hesitation in a similar situation can be found in, e.g., the Nocturne in F
minor, Op. 48 No. 2, bars 24 and 52). Similarly in bar 51.
Compare the passage in the sources»
category imprint: Differences between sources; Corrections & alterations
issues: Authentic corrections of EE
notation: Pitch