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Op. 25 No 8, Etude in D♭ major

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Issues : Cautionary accidentals

b. 26

composition: Op. 25 No 8, Etude in D♭ major

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In EE1 there is no  before g2, which in this context has to be considered as a mistake (admittedly an oversight).

category imprint: Differences between sources

issues: EE revisions , Cautionary accidentals , EE inaccuracies

b. 32-34

composition: Op. 25 No 8, Etude in D♭ major

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The notation of the three-bar chromatic progression does not contain errors in the sources, yet some of the cautionary signs seem to be unnecessary. In the main text we leave only the naturals before d and e in the last triplet of each bar, as these are notes before which one can expect signs in the D major key (in A and FE Chopin omitted only the last of them, before e3 in bar 34, completed in GE1). In A (→GE1) and FE Chopin also added flats before a2 and b2 in bar 33 and a3 and b3 in bar 34. In EE, particularly in GE2 (→GE3), a few bars were added in each bar.
In Chopin notation it is the orthography of the 6th sixth in each of these bars that draws attention – Chopin consistently writes a-f instead of b-g, which are proper of the D major key. 

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions , Cautionary accidentals , Last key signature sign