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. 11, Concerto in E minor, Mvt I
The traces of changes visible in FE prove that Chopin changed the enharmonic notation of the chord – c1 (with a cautionary 
) replaced the original b
1. The change was most probably followed by subsequent ones – the cautionary naturals before the c1 semiquaver in bar 436 and c2 in bar 437 were removed. All those accidentals are actually superfluous after bars 434-435; however, they prove that the B major key, present from bar 324, triggered the composer to clearly mark the return to the E minor key, beginning in the discussed bars.
Compare the passage in the sources »
category imprint: Corrections & alterations; Source & stylistic information
issues: Cautionary accidentals, Enharmonic corrections, Last key signature sign
notation: Pitch
