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b. 26

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

..

In A (→FC) Chopin wrote here only the top slur and pedalling markings. The remaining contents of this bar were marked as a repetition of the previous one with the help of two / marks.

category imprint: Differences between sources

issues: Abbreviated notation of A

b. 26

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

..

In GE the grace note is a g1, which is a patent mistake.

category imprint: Interpretations within context; Differences between sources

issues: Errors in GE

b. 27

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

..

In the main text we add a cautionary  before f1. It was also added in EE.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions

b. 27-32

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

..

In these bars Chopin would consistently put accidentals in A (→FE) only next to the bottom notes of the L.H. octaves (or not at all, as is the case with the 2nd crotchet in b. 27-28). Moreover, in b. 32 the  lowering c1 to c1 was crossed out in A! In FC Fontana added only 4 naturals concerning c1, while GE and EE contain all necessary accidentals.

category imprint: Interpretations within context; Differences between sources; Source & stylistic information

issues: EE revisions , Accidentals in different octaves , GE revisions , Deletions in A , Fontana's revisions , Inaccuracies in A , Errors repeated in FE

b. 28

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

Slur in A

No slur in FC (→GE) & FE (→EE)

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The slur of A, although perfectly clear, was overlooked both in FC (→GE) and FE (→EE). See also bars 29-30.

category imprint: Differences between sources

issues: Errors in FE , Errors of FC