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b. 76

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

a-c1 in AI, FE (→EE) & GE3

c1-e1 in GE1 (→GE2)

..

The version of GE1 (→GE2) is a remaining element of a Terzverschreibung committed by the engraver of FE1, which was corrected in the last stage of proofreading in the finished FE; however, through the proof copy serving as the basis for GE1, it found its way to this edition (in FE one can see traces of corrections of this mistake). In GE3 the correct text was most probably drawn from FE2.

category imprint: Differences between sources

issues: Errors in FE , Terzverschreibung error , GE revisions , Authentic corrections of FE

b. 76-77

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

Slur e1-f1 in AI, literal reading

Slur g1-f1 in AI, contextual interpretation

No slur in FE (→GE,EE)

category imprint: Graphic ambiguousness; Differences between sources

b. 76

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

F-f octave in AI

f in FE (→GE,EE)

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes

b. 77-79

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

Shorter slur in AI

Longer slur in FE (→GE,EE)

..

The complete lack of articulation markings in AI – slurs, staccato dots – in bar 78 points to Chopin's distraction in this bar, ending the line, since the preceding bars abounded in such markings. Therefore, the short slur in bar 77 may be unfinished or left without continuation with other slurs or dots. In the main text we give the two-bar slur of FE (→GE,EE), undoubtedly corresponding to the latest articulation concept of this phrase.

category imprint: Differences between sources; Corrections & alterations

issues: Inaccurate slurs in A

b. 78

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

B-major chord on 2nd beat in AI

Diminished seventh chord in FE (→GE,EE)

..

As in bar 10AI includes an earlier version of this bar, based entirely on a B major chord.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Main-line changes