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b. 43

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

category imprint: Differences between sources

issues: Errors in EE

b. 44

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

..

In FE the  in the L.H. part is before the top note of the third on the 3rd quaver in the bar, which results in A-c. The patent mistake was corrected in EE. The remaining sources also contain the correct text.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE

b. 45-47

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

One-part notation in A (→FE,FCGE)

One-part notation & in bar 47 fingering in EE

Additional beam in bar 47 in FES

Contextual interpretation of annotation in FES

Our suggestion in bars 45 & 47

..

The quaver beam added in FES to the last three quavers most probably indicates that they should be performed by the R.H. Since it concerns fingering, in the main text we also give it in analogous b. 45 (cf. General Editorial Principles, p. 17). In b. 45 it is convenient to perform this motif with the R.H. already from the 2nd quaver, e. The fingering of EE contradicts both indications in FES, i.e. here and in a similar phrase in b. 49. 

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Annotations in teaching copies , Annotations in FES

b. 45-49

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

..

In the main text we add cautionary naturals before g and G in b. 45, 47 and 49. See b. 42-43.

category imprint: Editorial revisions

b. 46

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