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b. 12

composition: Op. 28 No. 1, Prelude in C major

..

In GE the middle note of the 2nd triplet is an erroneous d1. It is a consequence of the note having been inaccurately placed – too low – in FC.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccuracies in FC , Errors repeated in GE

b. 13-14

composition: Op. 28 No. 1, Prelude in C major

 before 4th semiquaver in A, literal reading

 under 6th semiquaver in FC (→GE) & FE (→EE)

 before 6th semiquaver suggested by the editors

..

In these bars the  asterisks are written closer to the beginning of the bar than in the remaining ones (cf. the note on b. 2-28) – the marks are placed at the end of the 1st half of the bar both with respect to the L.H. and the R.H. parts. It is striking that such a position of the  marks was not reproduced either in FC (→GE) or in FE (→EE). It suggests that at this point of the manuscript both the copyist and the engraver were already convinced of the accidental nature of even the more distinct differences in the position of the  marks. Taking into account the homogeneous texture of the Prelude and the close correlation of pedalling with the sound of the principal one-bar figure, we assume that such an explicit divergence from the pedalling markings of the remaining bars is highly unlikely. Due to this reason, in the main text we give pedalling markings analogous to the ones used by Chopin in the remaining bars, considering the actual notation of A an acceptable variant, although probably unintended by Chopin. 

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccuracies in FE , Inaccuracies in FC , Inaccuracies in A

b. 13

composition: Op. 28 No. 1, Prelude in C major

..

In EE1 the last semiquaver in the R.H. in the 1st half of the bar is an erroneous a1 instead of an f1. The mistake was rectified in EE1a (→EE2).

category imprint: Differences between sources

issues: EE revisions , Errors in EE , Terzverschreibung error

b. 13

composition: Op. 28 No. 1, Prelude in C major

..

The correction visible in A – deletion of d as the 2nd semiquaver – shows the initial version of the chord constituting the harmonic basis of the bar. 

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A

b. 14

composition: Op. 28 No. 1, Prelude in C major

Slur in A (→FEEE) & GE2 (→GE3)

No slur in FC (→GE1)

..

The absence of a slur in FC (→GE1) is undoubtedly an oversight by the copyist, complemented in GE2 (→GE3).

category imprint: Differences between sources

issues: GE revisions , Errors of FC