On the basis of the photocopy of A we have at our disposal, it is difficult to state whether on the 2nd and 3rd crotchets in bar 19 Chopin wanted to have a
notes or not. FE (→GE,EE) includes a-c1-g1 chords, however, the engraver could have mistaken this bar with bar 17. A few different versions, which are included in bars 11-12 and 19-20 in the accompaniment of As, AI, AII and AIII, as well as deletions performed in these bars in A prove that Chopin was looking for the smartest version, as far as the sound and piano issues are concerned, until the very end. Giving bars 11 and 19 the same form seems to be justified due to the sound economy and thinking with pairs of bars (bars 17-18 and 19-20), therefore, we give this version in the main text.
Similarly in bar 91.
category imprint: Graphic ambiguousness; Interpretations within context; Differences between sources; Corrections & alterations
issues: Corrections in A, Accompaniment changes
notation: Pitch