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b. 2-3

composition: Op. 28 No. 20, Prelude in C minor

Slur to bar 3 in A & CGS (literal reading)

Slur in bar 2, contextual interpretations of A (→FCGE, →FEEE) & CGS, slur in AB & ACh

..

When interpreted literally, the slur of A reaches the 1st chord in b. 3; however, neither FC (→GE) nor FE (→EE) interpreted it so. A whole-bar slur is also in AB and probably ACh (see the characterization of that autograph). A similar ambiguity concerning the range of that slur is to be found in CGS too. In the main text we give a slur reaching the last crotchet in b. 2, taking into account numerous examples of similar situations in which the inaccuracy of slurs written by Chopin is unquestionable – cf., e.g. the Prelude No. 21 in B, b. 13 and 31 or 38.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A

b. 2-4

composition: Op. 28 No. 20, Prelude in C minor

..

In AB all L.H. octaves starting from D1-D are written in an abridged manner with the con 8va indication.

category imprint: Source & stylistic information

issues: Abbreviated octaves' notation

b. 2

composition: Op. 28 No. 19, Prelude in E♭ major

e2 in A (→FC,FEEE) & GE2 (→GE3)

g2 in GE1

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The engraver of GE1 did not notice (considered it a mistake?) that the first two notes of the last triplet do not constitute the interval of an octave, unlike in the previous ones. The mistake was corrected in GE2 (→GE3).

category imprint: Differences between sources

issues: Errors in GE , Terzverschreibung error , GE revisions

b. 2

composition: Op. 28 No. 15, Prelude in D♭ major

41 written into FES, probable reading

51 written into FES, alternative reading

No teaching fingering

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It is difficult to decipher the first of the two digits describing the change of fingers on the c2 minim in FES. At the first glance, it seems to be a three, which, however, cannot be obviously combined with the 2nd finger on a1 in b. 1. A close look reveals that the topmost part of the mark is vaguer, which suggests that it was written with a separate move. Therefore, a possible interpretation of that digit could be a five. It is also likely that it does not form a part of the mark at all, since it could be merely a trace of the pencil's move before the very act of writing. Such traces can occur when the writing person is in an inconvenient position, e.g. standing in front of a score placed on the music desk. In turn, the more distinct part of the entry resembles a four. The second and third interpretations result in pianistically natural solutions, i.e. the change of fingers from 5 to 1 or 4 to 1.

category imprint: Graphic ambiguousness; Differences between sources

issues: Annotations in teaching copies , Annotations in FES

b. 2

composition: Op. 28 No. 15, Prelude in D♭ major

b in A (→FC,FE) & GE2 (→GE3)

a in GE1

..

The version of GE1 must be the engraver's mistake, corrected in GE2 (→GE3).

category imprint: Differences between sources

issues: Errors in GE , GE revisions