Issues : Omission of current key accidentals
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b. 34
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composition: Op. 44, Polonaise in F♯ minor
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There is no category imprint: Interpretations within context |
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b. 35
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composition: Op. 27 No 2, Nocturne in D♭ major
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The version with f2 is possible both from the harmonic and the melodic point of view. However, it seems much more probable that Chopin omitted the category imprint: Interpretations within context; Differences between sources |
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b. 35
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composition: Op. 27 No 2, Nocturne in D♭ major
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Before the penultimate semiquaver in A (→GE1) the category imprint: Interpretations within context; Differences between sources issues: GE revisions , Omission of current key accidentals , Authentic corrections of FE |
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b. 35
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composition: Op. 27 No 2, Nocturne in D♭ major
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Missing before the penultimate semiquaver in A (→GE1→FE→EE) is the category imprint: Interpretations within context; Differences between sources |
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b. 35
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composition: Op. 10 No 12, Etude in C minor
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In A there are no flats on the 2nd beat in the bar, which is certainly a mistake (cf. two previous bars). Both necessary accidentals were added in a proofreading of FE (→GE,EE). category imprint: Interpretations within context; Differences between sources issues: Omissions to cancel alteration , Omission of current key accidentals , Authentic corrections of FE |
over 
in the sources, which is a patent inaccuracy, certainly repeated after [A]. The same applies to analogous b. 60 and 293.
raising b flat1 to b1 is missing. This obvious mistake was corrected in