Issues : Deletions in A

b. 2-3

composition: Op. 28 No. 16, Prelude in B♭ minor

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In A one can see crossed-out pedalling markings, according to which the pedal should be changed every half bar – 3 times  .

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A

b. 3-4

composition: Op. 28 No. 16, Prelude in B♭ minor

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In A one can see that three accidentals were crossed out; it seems that Chopin wrote them "just in case." Afterwards, it turned out that they were superfluous – the  before the penultimate note in b. 3 and the flats before d3 and g2 in b. 4. (We give the  before a3 in our transcriptions due to the division of the bar between the lines.) 

category imprint: Source & stylistic information

issues: Cautionary accidentals , Deletions in A

b. 16-17

composition: Op. 28 No. 16, Prelude in B♭ minor

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The crossings-out visible in the L.H. part in A allow us to decipher the initial version of the ending of b. 16 and of entire b. 17, which is as follows: .

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A , Accompaniment changes

b. 18-21

composition: Op. 28 No. 16, Prelude in B♭ minor

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All bass octaves in b. 18-20 and the first in b. 21 were provided with staccato dots in A, which Chopin then crossed out and replaced with slurs.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A

b. 22

composition: Op. 28 No. 16, Prelude in B♭ minor

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In A there was initially a  before the 5th semiquaver, which, together with the  before the 7th note, would result in the following sequence, in which the 5th, 8th and 10th notes would be c2.
In the next bar, when the subsequent seven semiquavers (counting from g1) are repeated an octave higher, there are no traces of changes – the final version was entered straight away.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A , Main-line changes