Issues : Last key signature sign

b. 4

composition: Op. 25 No 6, Etude in G♯ minor

..

In front of a1, the bottom note of the 4th third, all sources include . The sign is totally unjustified in this place (we omit it in the main text), however, it reveals Chopin's doubt, as far as the notation of the a/a note in the Gkey is concerned (cf. the note to bar 7).

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals , Last key signature sign

b. 7-8

composition: Op. 25 No 6, Etude in G♯ minor

No accidentals in FC (→GE1), FE & EE

Naturals in GE2 (→GE3)

Naturals suggested by the editors

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In front of the 2nd semiquaver in each of these bars, there are no accidentals in the sources except for naturals added in GE2 (→GE3), which cannot come from Chopin. Therefore, it seems that the top note is supposed to be a2. However, there are strong grounds, both source (proved also in other pieces Chopin's doubts concerning the notation of a/a notes in the G minor key) and stylistic (natural harmonic passage), for considering it as Chopin's mistake. Therefore, in the main text we suggest to add naturals to achieve the sound of a2.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Errors in FE , Errors in EE , Errors in GE , GE revisions , Last key signature sign , Errors of FC

b. 14

composition: Op. 25 No 6, Etude in G♯ minor

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In front of a at the beginning of the bar, the sources include a superfluous .

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals , Last key signature sign

b. 36

composition: Op. 25 No 6, Etude in G♯ minor

..

Same as in bar 4, in the main text we omit the superfluous  before a1, bottom note of the 4th third, present in all sources.

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals , Last key signature sign

b. 58

composition: Op. 25 No 6, Etude in G♯ minor

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The cautionary  before a2 present in the sources does not seem to be necessary here. Similarly in the penultimate third in bar 58 and in the eleventh one in bar 59. In the entire progression, all a notes (in different octaves) are provided with sharps, which is really justified only in some of the places.

category imprint: Source & stylistic information

issues: Cautionary accidentals , Last key signature sign