Erasures and other traces visible in A demonstrate that initially Chopin noted the minim e1 sustained in bars 20-23 on the upper staff. The laborious graphic alteration must have been undertaken to convey some vital information: that note, struck with the right hand at the beginning of bar 20, is then much more convenient to play when taken over and sustained with the left hand.
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category imprint: Corrections & alterations; Source & stylistic information
issues: Corrections in A
notation: Shorthand & other