In A one can see a three-bar correction here: the text on the top stave, including the part of the R.H. and crotchets in the L.H. (two in each bar), was crossed out and rewritten on the staves above (R.H. part) and below (the crotchets in the L.H. together with the necessary changes of clefs). The reason for these changes was an imprecision following from the original layout of the text – formally, the octave sign over the part of the R.H. would also apply to the crotchets in the L.H. written below it, which, of course, was not intended by Chopin. The original crossed out notation does not include 8- - -, so Chopin noticed a possible inaccuracy only when proceeding to write an octave sign.
Therefore, one may ponder whether it was already [AI], on the basis of which the composer probably copied A, that contained an imprecise notation or whether it was Chopin that, in order to make the process of notation easier, changed the layout in a careless manner only when writing A.
Compare the passage in the sources»
category imprint: Corrections & alterations; Source & stylistic information
issues: Corrections in A
notation: Pitch