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b. 39

composition: Op. 50 No. 1, Mazurka in G major

..

We add a cautionary  before f1 in the main text.

category imprint: Editorial revisions

b. 39

composition: Op. 50 No. 1, Mazurka in G major

..

Just like in b. 15, the cautionary  before g1 was added in the proofreading of FE (→EE).

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE

b. 45

composition: Op. 50 No. 1, Mazurka in G major

..

In A1 (→FE) there is no  lowering e1 to e1. It is a result of inattention at the time of performing corrections in this autograph: originally, it was a crotchet featuring e1 alongside the necessary  that was on the 1st beat in the R.H. bottom voice. Chopin did not control the notation of accidentals after he had replaced it with a rest. The sign was added in EE; it is also in GE, which could also be explained by an editorial revision.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors resulting from corrections , GE revisions , Errors of A , Errors repeated in FE

b. 49

composition: Op. 50 No. 1, Mazurka in G major

..

The cautionary natural before e1 was added in the proofreading of FE (→EE).

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE

b. 53-54

composition: Op. 50 No. 1, Mazurka in G major

..

The cautionary naturals before c2 in b. 53 and g1 in b. 54 were added – most probably by Chopin – in the proofreading of FE (→EE).

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE