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Fingering

b. 1-4

composition: Op. 28 No. 21, Prelude in B♭ major

No fingering in A (→FE,FCGE)

Fingering in EE

..

The sequences of dyads in the L.H., and further also in the R.H., were provided with a detailed fingering in EE. However, nothing indicates that it could be authentic.

category imprint: Differences between sources

issues: EE revisions

b. 4-5

composition: Op. 28 No. 21, Prelude in B♭ major

..

In the main text we include the fingering entered most probably by Chopin into FES. In addition to digits, there is also a mark implying that the e1 note should be performed by the R.H., which the notation of FE completely ignores, since the note was moved to the bottom stave. An analogous hint, in the form of an additional quaver flag pointing upwards, is also in FEJ. In the main text, in which we keep the original division of the text between the staves, we do not include those annotations, since they are superfluous.
See the previous note. 

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FES

b. 4

composition: Op. 28 No. 21, Prelude in B♭ major

Fingering digit written into FEJ

No teaching fingering

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FEJ

b. 5-6

composition: Op. 28 No. 21, Prelude in B♭ major

No fingering in A (→FE,FCGE)

Fingering in EE

category imprint: Differences between sources

issues: EE revisions

b. 9-10

composition: Op. 28 No. 21, Prelude in B♭ major

No fingering in A (→FE,FCGE)

Fingering in EE

category imprint: Differences between sources

issues: EE revisions