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b. 69

composition: Op. 30 No. 4, Mazurka in C# minor

..

In FE there is no  raising a to a. The patent inadvertence, typical of Chopin, was corrected in EE. The correct text is also to be found in FC (→GE).

category imprint: Interpretations within context; Differences between sources

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

b. 73

composition: Op. 30 No. 4, Mazurka in C# minor

..

FE (→EE) has no accidental before the R.H. semiquaver. The lack of a  raising e2 to e2 is an obvious error in this context (cf. bar 89).

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , Omission of current key accidentals , Errors repeated in EE

b. 75

composition: Op. 30 No. 4, Mazurka in C# minor

..

We add cautionary naturals before e2 and e-e1 in the main text.

category imprint: Editorial revisions

b. 77-78

composition: Op. 30 No. 4, Mazurka in C# minor

..

In the main text we add cautionary accidentals – a  to f1 in bar 77 and a  to e1 in bar 78. The latter was added also in EE.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions

b. 82

composition: Op. 30 No. 4, Mazurka in C# minor

..

We add a cautionary  before b1 in the main text. The accidental written by the revisor into FC was also added in GE.

category imprint: Differences between sources; Editorial revisions

issues: Foreign hand additions in manuscripts