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b. 24

composition: Op. 63 No. 1, Mazurka in B major

..

AI has neither  lowering b1 to b1 nor  lowering g1 to g1. The latter is also absent from EEC.

category imprint: Interpretations within context; Differences between sources

issues: Errors in EE , Omission of current key accidentals , Inaccuracies in A

b. 25

composition: Op. 63 No. 1, Mazurka in B major

..

The cautionary accidentals before the first notes on both staves, a  to E and a  to d2, are present in all sources except GE1. Formally speaking, they are not necessary; however, in this context their absence must be considered a mistake. Both were added in GE2 (→GE3), along with a third one, a  to e2

category imprint: Differences between sources

issues: GE revisions

b. 27-28

composition: Op. 63 No. 1, Mazurka in B major

Rest & chord in AI

Crotchet F & rest in FE (→GE,EE)

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes

b. 33-68

composition: Op. 63 No. 1, Mazurka in B major

..

In AI the middle section of the Mazurka, bars 33-68, is written down – like the outer sections – in a key signature containing 5 sharps, and in order to write d and a notes, naturals put next to individual notes are applied. The notation is generally careful, and we indicate a few certainly overlooked naturals to A or a notes in the notes on bars 34, 38, 44 and 52 (see also bars 36 and 46).
Chopin committed more inaccuracies in the second part of this section (from bar 53), in the version prepared for print. 

category imprint: Differences between sources; Corrections & alterations

issues: Accidental below/above the note

b. 36-46

composition: Op. 63 No. 1, Mazurka in B major

d1 & d2 after AI

d1 & d2 in FE (→GE,EE)

..

Although the notation of bars 36 and 46 does not differ between AI and FE (→GE,EE), the difference in key signature means that the 2nd quaver is a d1(2) in AI, but a d1(2) in the editions. Both versions are written correctly:

  • in AI, in both bars one can see deleted accidentals to these notes, which proves that Chopin proofread the notation there;
  • the notation of FE1 does not contain any mistakes or inaccuracies in this section (bars 33-52), and the convenience resulting from the prevailing A major key (with d notes) was most probably the main reason behind the change of key signature.

category imprint: Differences between sources; Corrections & alterations

issues: Main-line changes