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. 28 No. 16, Prelude in B♭ minor
In A the 
and the 
before the 9th and the 11th semiquavers in the bar are placed clearly lower than the notes they concern – more or less at the level of the 2nd ledger line. There is a similar situation in b. 19, although less distinct. Such a notation is often to be found in Chopinesque autographs, cf., e.g. the Etude in F Major, Op. 10 No. 8, b. 79.
Compare the passage in the sources »
category imprint: Source & stylistic information
issues: Accidental below/above the note
notation: Pitch