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b. 49-53

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

No fingering in A (→FE,FCGE)

Fingering in EE in bars 49 & 53

Fingering written into FES in bar 49

..

In the main text we include the fingering entered by Chopin into FES. In turn, nothing indicates that the different fingering of EE could be authentic.

category imprint: Differences between sources

issues: Annotations in teaching copies , EE revisions , Annotations in FES

b. 50

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

A1 in A (→FC,FEEE)

A1-A in GE

..

It is difficult to indicate which element of notation of FC could have misled the engraver of GE1. The absence of a respective correction in GE2 proves that the revision was implemented with the aim of detecting manifest errors; compliance with the Stichvorlage was not the main goal.

category imprint: Differences between sources

issues: Errors in GE

b. 50

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

No teaching fingering

..

In the main text we give the Chopinesque fingering entered into FED.

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED

b. 50-52

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

Minims g-g1 & f-f1 in A (→FCGE1, →FEEE)

Dotted minims in GE2 (→GE3)

..

Formally speaking, the revision of GE2 is justified – in the "voice" provided with a stem pointing upwards, the bar is incomplete. However, Chopin would rarely enter rests in such situations; an oversight of dots extending minims seems to be highly unlikely due to the fact that the notation of these chords was corrected a few times, including the crossed-out rest on the 3rd beat of b. 51.

category imprint: Differences between sources; Corrections & alterations; Source & stylistic information

issues: Corrections in A , GE revisions , Deletions in A , Accompaniment changes , Changed phrase length

b. 54

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

2 bars in A (→FEEE)

1 bar in FC (→GE)

..

The absence of this bar in FC (→GE) must be Fontana's mistake, a so-called haplography, i.e. omitting one out of two identical elements of writing, e.g. letter, syllable, word, etc. while copying. See also the Prelude No. 12 in G Minor, b. 78-79.

category imprint: Differences between sources

issues: Errors of FC