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b. 22

composition: Op. 28 No. 19, Prelude in E♭ major

..

Chopin put only one cautionary accidental – a  before d3 at the beginning of the bar. In the main text we also add a  before e3 and a  before g1.

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals

b. 23

composition: Op. 28 No. 19, Prelude in E♭ major

in A (→FCGE)

No sign in FE (→EE)

..

The missing  hairpin in FE (→EE) must be a result of an oversight of the engraver of FE.

category imprint: Differences between sources

issues: Errors in FE

b. 23

composition: Op. 28 No. 19, Prelude in E♭ major

..

In A (→FC,FE1) there is no accidental before the topmost note of the 3rd triplet. The overlooked  was added in FE2 (→EE) and GE.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Errors of A , FE revisions , Errors repeated in FE

b. 24

composition: Op. 28 No. 19, Prelude in E♭ major

..

The 3rd L.H. quaver in GE1 is an erroneous a instead of f, which was corrected in GE2 (→GE3).

category imprint: Interpretations within context; Differences between sources

issues: Errors in GE , Terzverschreibung error , GE revisions

b. 25-28

composition: Op. 28 No. 19, Prelude in E♭ major

..

In A (→FC,FE) there are no flats lowering to D in b. 25, d2 to d2 in b. 26 and g to g in b. 28. GE and EE2 added all necessary accidentals, whereas EE1 – only those in b. 25 and 28.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , GE revisions , Inaccuracies in A , Errors repeated in FE , Errors repeated in EE