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b. 61

composition: Op. 35, Sonata in B♭ minor, Mvt I

d in GC (→GE) & FE1 (→FE2EE)

D in FE3 (→FE4)

..

The version of FE3 (→FE4) is a certain Chopin improvement, in accordance with the version of this bar in the recapitulation (bar 189).

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE

b. 64

composition: Op. 35, Sonata in B♭ minor, Mvt I

Slur from 1st note in GC (→ GE)

Slur in FE (→ EE)

..

The GC (→GE) version seems to contain a double inaccuracy – the lack of a staccato dot (see precedent note) and a negligently written slur.

category imprint: Differences between sources

issues: Inaccuracies in GC

b. 64

composition: Op. 35, Sonata in B♭ minor, Mvt I

No staccato dot in GC (→GE)

Staccato dot in FE (→EE)

..

The absence of this mark is most probably an oversight of the copyist, repeated in GE. It is also the notation of the slur in this bar (the adjacent note) that is linked to it.

category imprint: Differences between sources

issues: Errors of GC

b. 65

composition: Op. 35, Sonata in B♭ minor, Mvt I

No sign in GC (→GE)

Arpeggio in FE (→EE)

..

As in bar 49, the absence of the arpeggio sign in GC (→GE) is presumably an oversight by the copyist.

category imprint: Differences between sources

issues: Inaccuracies in GC

b. 65

composition: Op. 35, Sonata in B♭ minor, Mvt I

Slur in GCFE (→EE)

No slur in GE

..

In GC (→GE) the 5th L.H. quaver  is written on the upper staff. This presumably resulted in GE's omission of the L.H. slur.

category imprint: Differences between sources

issues: Errors in GE