Issues : Corrections in A

b. 1

composition: Op. 28 No. 14, Prelude in E♭ minor

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Chopin initially wrote marcato instead of pesante in A.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A

b. 1

composition: Op. 28 No. 13, Prelude in F♯ major

3/2 in sources

6/4 suggested by the editors

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In the sources, the time signature is 3/2. It is Chopin's mistake (the correct time signature is 6/4), perhaps related to the change of notation – Chopin started writing the Prelude with half the rhythmic values, which is evidenced by the reduced number of beams (one of the beams was crossed out) in the 1st accompaniment figure and by the dotted crotchets constituting the 1st R.H. chord (which was crossed out). The initial time signature was carefully blacked out, hence its interpretation is uncertain; however, it was most probably 6/8. 

category imprint: Editorial revisions; Corrections & alterations; Source & stylistic information

issues: Corrections in A , Errors resulting from corrections , Rhythmic errors , Deletions in A

b. 1

composition: Op. 28 No. 12, Prelude in G♯ minor

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After Presto, in A one can see that the further part of the indication was crossed out, most probably con fuoco.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A , Changes of tempo markings

b. 1-6

composition: Op. 28 No. 18, Prelude in F minor

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In A we can see that the pairs of chords in b. 1-2 and 5-6 were initially provided with staccato dots and not slurs. In b. 1 the dots were deleted and replaced with a slur; in the remaining ones, Chopin wrote the slurs in a way so as to cover the dots.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A

b. 1

composition: Op. 28 No. 21, Prelude in B♭ major

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A , Changes of tempo markings