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. 21, Concerto in F minor, Mvt II
On the 3rd beat of the bar A does not have flats lowering c1(2) to c
1(2), which is Chopin's patent oversight: the A minor key is valid already from bar 37 and in the discussed bar it was confirmed by a 
before the top most note of the passage in the 1st half of the bar. The sign in the R.H. was added already in GE (→FE→EE), whereas the in the L.H. was added only in GE2.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources; Editorial revisions
issues: Accidentals in different octaves, GE revisions, Omission of current key accidentals, Errors of A, Errors repeated in GE, Errors repeated in FE, Errors repeated in EE
notation: Pitch
