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. 4), Sonata in C minor
Op. 10 No 8, Etude in F major
The sources differ in the presence of accidentals, which, however, does not raise any doubts concerning the text's interpretation. Considering the fact that Chopin and a part of his editors used slightly different rules of validity of the signs written with the use of the octave sign, we state that A is missing two necessary signs, a 
before the bottom note of the octave at the beginning of bar 37 (B) and a 
before the 14th semiquaver in bar 38 (e1). In FE (→EE) only the 1st of them was completed, in GE – both. According to the rules which are generally applied today, we also consider both flats in the 3rd group of semiquavers in bar 38 (e2 and a1) and a 
in the 3rd group in bar 40 (c2) to be necessary. Some of them were added in GE1 (the of a1) and in EE4 (), while GE2 and subsequent GE,s include all of them.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Accidentals in different octaves
notation: Pitch
