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b. 7

composition: Op. 30 No. 2, Mazurka in B minor

 after 3rd beat in sources

 on 3rd beat suggested by the editors

..

The  asterisk having been added after the 3rd crotchet must be an inaccuracy of the pedalling of [A], perhaps added in haste. There are no musical reasons for mixing harmonies in this place. See also bars 17-18 and 20-22.

category imprint: Editorial revisions

b. 7

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

Slur in AI

No slur in FE (→GE,EE)

..

In the main text, after a comparison with similar bar 75, we insert a slur after AI. The absence of the slur in FE (→GE,→EE) is probably an oversight, perhaps present already in [A].

category imprint: Differences between sources; Editorial revisions

b. 7

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

 over d2 in AI & GE3

 under b in FE (→EE,GE1GE2)

..

As in bar 5, the  having been placed under b resulted from a routine revision of FE (→EE,GE1GE2). The misleading notation was corrected only just in GE3.

category imprint: Differences between sources

issues: Placement of markings , GE revisions , FE revisions

b. 7-15

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

..

In bars 7 and 15 the sources do not contain sharps over the mordents. There are no doubts as to the sound of the top note, while the notation is inaccurate, as usual in such situations in Chopin's works (in bar 7 it concerns only AI and GE3 due to the misplaced  mark in the remaining sources). In the versions 'edited text' and in the main text we add the absent accidentals.
There is a similar situation in bar 75.

category imprint: Interpretations within context

issues: Errors in FE , Accidentals in different octaves , GE revisions , Errors repeated in GE , Errors repeated in EE

b. 7

composition: Op. 2, Variation IV, primitive version

e1-c1 in AsI

c1-a in A

..

In the 1st half of the bar, the L.H. part bears traces of corrections in AsI. While working on this manuscript, the initial version:  was ultimately replaced by the one we give in our transcription. Chopin then once more changed the 2nd and 3rd hemidemisemiquavers in the 1st figure of the bar; in A he returned to the initial version. 

category imprint: Differences between sources; Corrections & alterations

issues: Chopin's hesitations , Accompaniment changes , Corrections of AI