mUltimate Chopin

Op. 35, Sonata in B♭ minor, Mvt I

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b. 5-8

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

Slur in GC (→GE)

No slur in FE (→EE)
..

The slur over this four-bar section could have been added by Chopin in GC (→GE) or overlooked by the engraver of FE (→EE). It seems to be highly unlikely that Chopin intentionally removed this sign.

category imprint: Differences between sources

issues: Authentic corrections in GC

b. 6-7

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

..

There are no quaver rests at the end of b. 6 and 7 in GC (→GE). It is probably the copyist's mistake.

category imprint: Differences between sources

issues: Errors of GC , Errors repeated in GE

b. 7-8

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

 in GC (→GE) & EE2

 in bar 8 in FE (→EE1)
..

The fact of beginning the  hairpin in FE (→EE1) later can be justly considered to be an inaccuracy related to the abbreviated notation of bar 7 in [A] and layout of the text in FE, in which bar 8 opens the 2nd line.

category imprint: Differences between sources

issues: Inaccuracies in FE

b. 7-15

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

..

In GC – certainly in accordance with [A] – bar 7 is written in an abbreviated manner as a repetition of bar 6. Similar abbreviations appear also in the part of the L.H. in bars 10-11, 12 (the 2nd half of the bar) and 15.

category imprint: Differences between sources

issues: Abbreviated notation of A

b. 8

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

d-b-d1 in GC, FE (→EE) and GE2

f-b-d1 in GE1
..

The f-b-d1 chord in GE1 is certainly an engraver's error. Moreover, the mistake changed the meaning of the slur which became a tie to f. 

category imprint: Differences between sources; Corrections & alterations

issues: Errors in GE , Terzverschreibung error , GE revisions