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b. 9

composition: Op. 28 No. 10, Prelude in C♯ minor

..

In the main text we add a cautionary  before a, in spite of the fact that the crossing-out visible in A suggests that Chopin considered it superfluous.

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals , Deletions in A

b. 9

composition: Op. 28 No. 10, Prelude in C♯ minor

..

In A (→FC,FE) there is no  lowering d2 to d2. The Chopinesque inaccuracy was corrected in EE and GE.

category imprint: Differences between sources

issues: EE revisions , GE revisions , Omission of current key accidentals , Inaccuracies in A , Errors repeated in FE

b. 10-11

composition: Op. 28 No. 10, Prelude in C♯ minor

Slur to f in A, contextual interpretation

Slur to g in FC (→GE) & FE (→EE)

..

The ending of the slur in A is unclear – the slur reaches more or less the middle of the crossed-out, initial version of b. 11 (probably it was only the R.H. part that was written down). Therefore, it may mean a slur reaching further than the end of b. 10 or a slur that does not reach the f note in b. 11. Both FC and FE adopted the latter, perhaps in the belief that the crossing-out also applies to the ending of the slur, falling on b. 11. According to us, two slurs clearly reaching in A the minim that ends the passage (b. 3 and 15) are strong arguments in favour of an analogous interpretation of the notation of A in the discussed place.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A

b. 11

composition: Op. 28 No. 10, Prelude in C♯ minor

..

In the main text we add cautionary sharps before d1 and D.

category imprint: Editorial revisions

b. 11-12

composition: Op. 28 No. 10, Prelude in C♯ minor

Slur in A (→FEEE)

No slur in FC (→GE)

..

The missing slur in FC (→GE) is an oversight of Fontana. The slur of A was being extended so that it could also encompass the last crotchet in b. 12. The added fragment ends already in the next bar, in which, however, there is not a single element of notation to which it could have been led. Therefore, it is simply an inaccuracy, quite frequent for Chopin.

category imprint: Differences between sources; Source & stylistic information

issues: Inaccurate slurs in A , Corrections in A , Embracing slurs , Errors of FC