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b. 1

composition: Op. 28 No. 12, Prelude in G♯ minor

..

The 4th quaver in FE is an erroneous f1, as a result of which the next quaver is also wrong – it is an e1 instead of an e1. A comparison with analog. b. 9, 41 and 49 suggests a mistake; another argument is the presence of a , completely unjustified before f1. The mistake was rectified in EE; a corresponding correction is also in FED.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , EE revisions , Errors in FE , Annotations in FED

b. 3

composition: Op. 28 No. 12, Prelude in G♯ minor

..

In A (→FE,FCGE) there is no  restoring g1 on the 3rd crotchet in the bottom R.H. voice. The mistake was noticed only in EE.

category imprint: Differences between sources; Editorial revisions

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

b. 4

composition: Op. 28 No. 12, Prelude in G♯ minor

..

We add a cautionary  in the main text. Chopin wrote a corresponding accidental in similar bar 52.

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals

b. 5

composition: Op. 28 No. 12, Prelude in G♯ minor

..

In the main text we add a cautionary  before c2.

category imprint: Editorial revisions

b. 5

composition: Op. 28 No. 12, Prelude in G♯ minor

..

FE1 has no  before the 2nd L.H. crotchet. The mistake was corrected in FE2 (→EE).

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , FE revisions