Issues : Errors in FE
b. 9-13
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composition: Op. 25 No 9, Etude in G♭ major
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In GC (→GE1), FE and EE there are no naturals raising c to c in bars 9 and 13 and c1 to c1 in bar 12. These are Chopin's obvious oversights, while the signs were added in FED (in bar 9) and FEJ and FES (all). category imprint: Interpretations within context; Differences between sources issues: Annotations in teaching copies , Errors in FE , Annotations in FED , Errors in EE , Errors in GE , GE revisions , Omission of current key accidentals , Annotations in FES , Annotations in FEJ |
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b. 34
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composition: Op. 25 No 9, Etude in G♭ major
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Lack of the naturals raising C-c to C-c is almost certainly Chopin's mistake, despite the fact that this kind of oversights of signs introducing alterations are not frequent (yet they are to be found in, e.g., the Etude in F minor, No. 2, bar 56). It could have seemed that the C-c octave did not require naturals due to the following reasons:
category imprint: Interpretations within context; Differences between sources issues: Errors in FE , Errors in EE , Errors in GE , Last key signature sign , Errors of GC |