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b. 19-20

composition: Op. 28 No. 24, Prelude in D minor

sempre forte in A (→FC,FE)

sempre forte in b. 19 in GE

sempre  in b. 19 in EE

category imprint: Graphic ambiguousness; Differences between sources

issues: EE revisions

b. 20-21

composition: Op. 28 No. 24, Prelude in D minor

..

In the abridged notation of the L.H. part, Chopin initially used two / marks in each of these bars. Therefore, they indicated particular figures, not bars.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A

b. 20

composition: Op. 28 No. 24, Prelude in D minor

..

At the end of the bar, one can see a crossed-out  mark in A. Crossings-out of those marks in similar situations are also to be found at the end of b. 9, 41 and 54.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A

b. 21-23

composition: Op. 28 No. 24, Prelude in D minor

..

EE1 overlooked ties to a in bars 21-22 and g1 in bar 23. The errors were corrected in EE2.

category imprint: Differences between sources

issues: EE revisions , Errors in EE

b. 22

composition: Op. 28 No. 24, Prelude in D minor

..

In A there is no dot extending the a crotchet, which is a patent oversight. The dot is present in all the remaining sources.

category imprint: Interpretations within context; Differences between sources

issues: Rhythmic errors , Errors of A , FE revisions , Fontana's revisions