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Source:
p. 1, b. 1-19
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In A one can see that Chopin was reducing the range of the accompanying figures in b. 11 and 17. In particular, he moved the bass note in the 2nd half of b. 11 an octave higher: 
, while in b. 17, which was initially identical to b. 15, he replaced both bass F notes with dyads in the middle register.
Compare the passage in the sources»
category imprint: Corrections & alterations; Source & stylistic information
issues: Corrections in A, Deletions in A, Accompaniment changes
notation: Pitch
Missing markers on sources:
A, FC, FE1, FE2, FED, FES, FEJ, FESch, EE1, EE2, GE1, GE2, GE3, EE1a