Issues : Omission of current key accidentals

b. 22

composition: Op. 10 No 11, Etude in E♭ major

..

In A there is no  lowering to g in the 1st chord in the L.H.

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals , Errors of A , Authentic corrections of FE

b. 22

composition: Op. 25 No 1, Etude in A♭ major

..

Many sources lack in one or both naturals before the bottom notes in the R.H. in the 1st and 2nd group of semiquavers. CDP lacks in both signs, while A (→GE1), FE and EE only the second. The correct notation is included in AI and GE2 (→GE3).

AI and EE1 lack in the  raising d2 to d2 at the beginning of the 2nd group of semiquavers.

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues: Accidentals in different octaves , GE revisions , Omission of current key accidentals , Errors of CDP

b. 22

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

..

GC and FE1 (→FE2FE3) do not include naturals before the octave on the 4th quaver of the bar. The flats before g2 and g1 in the 2nd half of the bar prove Chopin's oversight. The naturals were added in GE and EE, as well as in FE4.

category imprint: Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Omission of current key accidentals , FE revisions , Last key signature sign , Errors of GC

b. 22

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

..

In A the naturals raising d notes to d are written only on the 4th beat of the bar. In spite of this, there are no doubts that d is required in the entire 2nd half of the bar. In GE1 (→FEEE, →GE2) a  raising d3 to dat the beginning of the 3rd beat of the bar was added (referring also to d4), but only EE and GE2 include a corresponding sign before the penultimate semiquaver.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: EE revisions , Accidentals in different octaves , Inaccuracies in GE , Inaccuracies in FE , GE revisions , Omission of current key accidentals , Errors of A , Authentic corrections of GE

b. 22

composition: Op. 28 No. 17, Prelude in A♭ major

..

In FCI there are no sharps before the middle note of the 2nd L.H. quaver (c1) and before the outer notes of the 3rd quaver (g and g1). In the final version Chopin corrected that patent inaccuracy.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Omission of current key accidentals