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 I
In the main text we preserve the cautionary (?) 
, present in all sources, before a
1 as a proof of the Chopin way of thinking. However, the reason for its introduction is unclear – Chopin may have simply followed an analogy with bars 230 and 236, in which the corresponding semiquaver is a g1, always written with a .
Compare the passage in the sources »
category imprint: Source & stylistic information
issues: Cautionary accidentals
notation: Pitch