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b. 11

composition: (Op. 4), Sonata in C minor, Mvt I

..

In the main text we include the cautionary  to f1 added by GE (→FE,EE,IE).

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 15

composition: (Op. 4), Sonata in C minor, Mvt I

..

In A one can see that the  to a was being removed. Chopin entered it probably under the influence of the preceding bars, in which he had to write flats to the a1 notes.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Last key signature sign

b. 17

composition: (Op. 4), Sonata in C minor, Mvt I

..

In the main text we omit the (cautionary?)  before d2 that appears in all sources.

category imprint: Editorial revisions

issues: Cautionary accidentals

b. 18-19

composition: (Op. 4), Sonata in C minor, Mvt I

..

In the main text we include the cautionary naturals to c2 added at the beginning of these bars by GE (→FE,EE,IE).

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 22

composition: (Op. 4), Sonata in C minor, Mvt I

..

In GE (→FE,EE,IE) a cautionary  was added to e3.

category imprint: Differences between sources

issues: GE revisions