In FED Chopin marked in an abbreviated manner an extension of the figuration with an octave (in pencil). A similar solution can be found in the Etude in F minor, Op. 25 No. 2, bar 67, the Nocturnes in F minor, Op. 48 No. 2, bars 113-114 and in E major, Op. 62 No. 2, bars 68-69 and in the Waltz in A major, Op. 34 No. 1, bars 163-164 and 167-168. In some of the cases, the idea of the variant could have been related to the extended piano scale, which in Chopin's last years reached until a4.
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category imprint: Differences between sources; Source & stylistic information
issues: Annotations in teaching copies, Annotations in FED, Authentic post-publication changes and variants
notation: Pitch