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b. 2

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

..

GC has a as the last quaver in the L.H. GE corrected this mistake, probably on the basis of comparison with the 1st half of the bar.

category imprint: Interpretations within context; Differences between sources

issues: GE revisions , Errors of GC

b. 2-5

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

..

In GC bar 2 (the entire bar except for the slur) and bar 5 (part of the L.H.) are written in an abbreviated manner with a /sign. The notation is certainly repeated after [A]. Similar abbreviations appear also in bar 8 and 12-13. 

category imprint: Source & stylistic information

issues: Abbreviated notation of A

b. 2

composition: Op. 64 No 2, Waltz in C♯ minor

a-c1 in As (literal reading)

a-c1 in As (probable interpretation)

a-c1-d1 in AI (literal reading)

a-c1-d1 in AI (contextual interpretation)

d-a-c1 in A & FE (→GE,EE)

..

In the previous autographs, Chopin tried varied versions of chords in this bar. Eventually, he used the original version only (with an a-cthird) at the return of this phrase in bar 18. In both previous autographs, it is the absence of a  raising to a that draws attention. According to us, it is not a harmonic variant, yet an inaccuracy of notation, therefore, we consider a literal interpretation (without ) in these sources only a highly unlikely variant.

category imprint: Differences between sources; Corrections & alterations

issues: Omission of current key accidentals

b. 2-3

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

 in GC

Longer  in FE (→EE)

No mark in GE1

Shorter   in GE2

..

According to us, out of two sources based directly on [A] – GC and FE – it is the copy that may convey a more accurate representation of this place in the autograph, since the text in FE is too tightly packed.

category imprint: Differences between sources

issues: Inaccuracies in GE , Scope of dynamic hairpins , Errors in GE , GE revisions

b. 2

composition: Op. 21, Concerto in F minor, Mvt II

..

In A there is no  before the top note of the octave. This patent inaccuracy was corrected in GE (→FEEE).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A