Issues : Errors of GC

b. 49

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

No sign in GC (→GE)

Arpeggio sign in FE (→EE)

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The arpeggio sign is already present in FE1, based directly on [A], and almost certainly uncorrected by Chopin. This suggests the absence of the sign in GC (→GE) is probably an oversight. Similarly in bar 65. 

category imprint: Differences between sources

issues: Errors of GC

b. 50

composition: Op. 25 No 11, Etude in A minor

..

In GC, FE and EE1 (→EE2) there is no  returning a2. This patent inaccuracy was corrected in GE and EE3.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors in EE , Omissions to cancel alteration , GE revisions , Errors of GC

b. 51

composition: Op. 25 No 11, Etude in A minor

No sign in GC (→GE1)

 in FE, EE & GE2 (→GE3)

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The  sign was most probably overlooked by the copyist in GC (→GE1) here. It was added in subsequent GE.

category imprint: Differences between sources

issues: Errors of GC

b. 54

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

No sharps in GC (→GE) & FE1 (→FE2EE1)

Sharps in FE3 (→FE4) & EE2

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In the main text, we include the added in the proofreading of FE3 (→FE4) – most probably by Chopin – sharps raising the f1-f2 grace note to f1-f2. According to us, it was probably a correction of a mistake. Similarly in the recapitulation – bar 242

category imprint: Differences between sources; Corrections & alterations

issues: EE revisions , Errors in FE , Errors in EE , Errors in GE , Omission of current key accidentals , Authentic corrections of FE , Errors of GC

b. 56

composition: Op. 38, Ballade in F major

 in A (→FE,EE)

 in GC

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GC (→GE) has  instead of . It is almost certainly an error resulting from the copyist's misunderstanding of the layout of three lines, creating in A the  hairpins and the slur in the L.H.

category imprint: Interpretations within context; Differences between sources

issues: Sign reversal , Errors of GC