The version of AI, in which the melodic line is doubled one octave lower by the lowest notes of the figuration in the R.H. is earlier and it was changed by Chopin at the stage of preparing the piece for print.
The notation of the original version includes an error on the 4th beat of the bar – not cancelled naturals from the 1st half of the bar raise e
2(1) to e2(1) also here; in this version, the combination with the next bar is unacceptable.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Omissions to cancel alteration
notation: Pitch