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b. 158-159

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

1 accent in GC

2 accents in FE (→EE)

No marks in GE

..

Missing accents in GC & GE were most probably overlooked.

category imprint: Differences between sources

issues: Errors in GE , Errors of GC

b. 158

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

..

In A Chopin overlooked two naturals necessary on the 4th quaver in the bar (a and e1). GE1 (→FEEE) added a  raising a to a. GE2 has the correct text.

category imprint: Interpretations within context; Differences between sources

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

b. 158

composition: Op. 11, Concerto in E minor, Mvt I

Minim in FE

Dotted minim in GE & EE

..

A comparison with similar bars 160, 513 and 515 points to a very likely oversight of the dot extending the f minim in FE.

category imprint: Differences between sources

issues: EE revisions , Inaccuracies in FE , GE revisions

b. 158-159

composition: Op. 11, Concerto in E minor, Mvt III

No slur in FE (→GE,EE)

Slur suggested by the editors

..

In the main text, we suggest here a slur modelled after the entry in FED placed two bars earlier.

category imprint: Editorial revisions

b. 158

composition: Op. 50 No. 3, Mazurka in C♯ minor

..

Both autographs are lacking in the  restoring e on the 3rd beat of the bar, which is a patent oversight. The accidental was added in FE (→EE), which could have been performed by the reviser. It is also present in GE, and the layout of the accidentals before this dyad in GE1 also points to the fact that the sign was added in print (cf. the correct layout in GE2). 

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , GE revisions , Errors of A , FE revisions