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b. 2-3

composition: Op. 28 No. 23, Prelude in F major

No fingering in A (→FE,FCGE)

Fingering in EE

..

The fingering of EE cannot come from Chopin; however, it is natural, and it cannot be ruled out that it is consistent with the fingering the composer wanted to provide those figures with.

category imprint: Differences between sources

issues: EE revisions

b. 2

composition: Op. 28 No. 23, Prelude in F major

No fingering in A (→FE,FCGE)

Fingering in EE

..

The fingering of EE was added as a result of a revision of the publisher.

category imprint: Differences between sources

issues: EE revisions

b. 2-10

composition: Op. 28 No. 23, Prelude in F major

Slurs from grace notes in A (→FCGE)

Slurs from 2nd crotchet in FE (→EE)

..

The slurs in b. 2 and 6 (as well as in b. 18) explicitly encompass already the grace notes introducing the trills. In this situation, we consider the slur in b. 10 to be inaccurate; in the main text we suggest a slur analogous to the remaining ones. The notation of FC is vague – three out of four slurs run rather from the 2nd grace note (only in b. 6 from the first one). As such a notation is musically unjustified, we assume that the copyist meant slurs starting from the 1st grace note in all places, which is how it was interpreted in GE.

As far as the end point of the slurs is concerned, according to us, the notation of A in b. 6 and 10 points rather to boldly written slurs (which were obvious to Chopin) than tenuto-slurs led to the end of the bar (see, however, b. 18).

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccuracies in FE , Inaccurate slurs in A , Inaccuracies in FC , Tenuto slurs

b. 2-6

composition: Op. 28 No. 23, Prelude in F major

..

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  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.

category imprint: Corrections & alterations; Source & stylistic information

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

b. 2-4

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

Slurs from 2nd quaver in A (→FEEE)

Slurs from first quaver in FC (→GE)

..

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