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. 24, Prelude in D minor
In A (→FE,FC→GE) Chopin wrote 4 unnecessary (cautionary?) naturals in b. 55 in the sequence of thirds: before c4 (6th semiquaver), e3 (11th semiquaver), d3 (16th semiquaver) and a2 (18th semiquaver). In turn, he overlooked the necessary restoring c2 on the 11th semiquaver in b. 56, which was also repeated in all the aforementioned sources. EE removed two superfluous accidentals, before c4 and d3, and enharmonically changed the Chopinesque orthography in three places:
- the 12th semiquaver in b. 55 was written as e3-g3; consequently, the then unnecessary naturals before the next third were removed and a restoring e3 was added in the subsequent one;
- the same applies an octave lower in b. 56 (6th, 7th and 8th semiquavers);
- the 11th semiquaver in b. 56 was written as b1-d2; consequently, the then unnecessary naturals before the next third were removed and a restoring b1 in the subsequent one was added. This manner of notation reminds the one Chopin used before (first two octaves higher and then an octave higher).
Compare the passage in the sources »
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