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. 63 No. 2, Mazurka in F minor
In As one can see that before the 2nd quaver of the lower R.H. voice a 
was initially entered. Chopin then changed it to a 
and probably added a cautionary one before the a
in the L.H. The accidental in the R.H. is also present in the version prepared for publication.
Compare the passage in the sources »
category imprint: Corrections & alterations; Source & stylistic information
issues: Main-line changes
notation: Pitch
