Issues : Incomplete sources

b. 9-12

composition: Op. 35, Sonata in B♭ minor, Mvt IV

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From the middle of bar 9, in Afin only the part of the R.H. is written out. On the bottom stave, Chopin wrote unisono as indication of continuation of the L.H. parallelly with the R.H. The autograph ends together with bar 12.

category imprint: Differences between sources; Source & stylistic information

issues: Abbreviated notation of A , Incomplete sources