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b. 163

composition: Op. 50 No. 3, Mazurka in C♯ minor

..

We add cautionary sharps before g and f in the main text.

category imprint: Editorial revisions

b. 164

composition: Op. 50 No. 3, Mazurka in C♯ minor

..

The majority of the sources are lacking in cautionary accidentals in this bar. The only exception is EE, in which naturals were added before b and a. We include the former in the main text.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions

b. 165

composition: Op. 50 No. 3, Mazurka in C♯ minor

..

AI and AF are lacking in the  lowering d to d. The patent inaccuracy was corrected in FE (→EE); it is also GE that features the correct text.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , FE revisions , Inaccuracies in A

b. 166

composition: Op. 50 No. 3, Mazurka in C♯ minor

Crotchet f1 in AI & AF (→FEEE)

Quaver f1 in GE

..

In the main text we give the simplified – most probably by Chopin in [AG] – notation of GE. The only perceptible difference affecting the performance is the rhythmic value of the f1 note in the chord on the 2nd quaver of the bar.
In AI this bar is of draft nature, written hastily and containing numerous crossings-out. The final version corresponds to the one of AF.

category imprint: Differences between sources; Corrections & alterations; Source & stylistic information

issues: Chopin's hesitations , Corrections of AI

b. 166

composition: Op. 50 No. 3, Mazurka in C♯ minor

..

In AI there is no  lowering c1 to c1, moreover, AI and AF lack a  lowering C to C. The inaccuracy of AF was corrected in FE (→EE); it is also GE that features the correct text.
Before e1 on the 3rd beat, all sources except for GE contain a superfluous .

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Cautionary accidentals , FE revisions