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b. 2-6
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composition: Op. 28 No. 23, Prelude in F major
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Thanks to the crossings-out and added notes in b. 2 and 6 visible in A, we can reconstruct the initial version of the last beat of these bars as category imprint: Corrections & alterations; Source & stylistic information issues: Corrections in A , Deletions in A , Main-line changes |
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b. 2-4
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composition: Op. 28 No. 21, Prelude in B♭ major
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The ending of the slur from b. 2 led to b. 3 is hardly visible in A, which probably convinced Fontana that the slurs of L.H. figures were supposed to end on the last quaver in the bar, like in b. 1 (it is likely that it was only after he had seen the slurs in b. 5-6 and 6-7 that he realised that he was wrong and prolonged the slur in b. 4). In the case of beginnings of the slurs, even the correct interpretation of the slurs in b. 5-7 did not make him correct the previously written slurs or keep the notation of A in further bars (in A it is only the slurs in b. 9 and 15 that can be considered vague in this respect; the remaining ones clearly begin on the 2nd quaver). In the main text we give the notation of A (also in further bars). category imprint: Differences between sources issues: Inaccuracies in FC |
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b. 2-3
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composition: Op. 28 No. 20, Prelude in C minor
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When interpreted literally, the slur of A reaches the 1st chord in b. 3; however, neither FC (→GE) nor FE (→EE) interpreted it so. A whole-bar slur is also in AB and probably ACh (see the characterization of that autograph). A similar ambiguity concerning the range of that slur is to be found in CGS too. In the main text we give a slur reaching the last crotchet in b. 2, taking into account numerous examples of similar situations in which the inaccuracy of slurs written by Chopin is unquestionable – cf., e.g. the Prelude No. 21 in B category imprint: Graphic ambiguousness; Differences between sources issues: Inaccurate slurs in A |
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b. 2-4
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composition: Op. 28 No. 20, Prelude in C minor
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In AB all L.H. octaves starting from D category imprint: Source & stylistic information issues: Abbreviated octaves' notation |
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b. 2
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composition: Op. 28 No. 19, Prelude in E♭ major
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The engraver of GE1 did not notice (considered it a mistake?) that the first two notes of the last triplet do not constitute the interval of an octave, unlike in the previous ones. The mistake was corrected in GE2 (→GE3). category imprint: Differences between sources issues: Errors in GE , Terzverschreibung error , GE revisions |
and 
. The idea of changing it probably arose when Chopin was writing b. 6; afterwards, he introduced a respective correction in b. 2. It is proven by the notation of an analogous figure in b. 10, in which the final version was written right away, without corrections.
, b. 
