Op. 2, Variations in B♭ major
Op. 10, 12 Etudes
Op. 11, Concerto in E minor
Op. 21, Concerto in F minor
Op. 22, Polonaise in E♭ major
Op. 24, 4 Mazurkas
Op. 25, 12 Etudes
Op. 26, 2 Polonaises
Op. 27, 2 Nocturnes
Op. 28, 24 Preludes
Op. 30, 4 Mazurkas
Op. 35, Sonata in B♭ minor
Op. 50, 3 Mazurkas
Op. 63, 3 Mazurkas
Op. 64, 3 Waltzes
Op. 25 No 10, Etude in B minor
The sources include sharps before all a
and a1 notes (except for a1 in bar 95 in GC, GE and FE and in bar 96 in EE). It seems that in this transitory fragment, preparing the return of the B minor key and, de facto, already maintained in it, both keys – B major and B minor – overlapped in Chopin's mind. Perhaps it also had to do with Chopin's general uncertainty concerning the validity of the last key signature (cf. the note to the Etude in G minor, No. 6, bars 7-8).
Compare the passage in the sources »
category imprint: Editorial revisions
issues: Cautionary accidentals
notation: Pitch