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
WN 17, Polonaise in B♭ major
In the sources there is no 
before a1. It is related to different range of the octave sign at the beginning of the bar: the second semiquaver triplet is still not embraced by it, which makes that the on the level of a1 (in the notation) appears already before the 6th semiquaver of the bar.
Compare the passage in the sources »
category imprint: Source & stylistic information
issues: Accidentals in different octaves
notation: Pitch
