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Op. 10 No 12, Etude in C minor

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b. 1

composition: Op. 10 No 12, Etude in C minor

in A

in FE (→GE,EE) 
..

We give the time signature after A. Although FE (→GE,EE) displays , it is, however, difficult to assume that the change of time signature was intentional if in FE the  was not used in Etudes even once (contrary to the manuscripts), cf. the Etude in C major, No. 1, C minor, No. 4 and F major, No. 8. The phenomenon also applies to other pieces, even in the most obvious cases, e.g., in the Etude in F minor, Op. 25 No. 2, D major, Op. 25 No. 8 or F minor, Dbop. 36 No. 1.

category imprint: Differences between sources

issues: Errors in FE , 4/4 or 2/2

b. 24

composition: Op. 10 No 12, Etude in C minor

Semibreve in A & GE

Minim in FE (→EE)
..

The rhythmic value of the chord in FE – a minim – is probably erroneous, as in the 2nd half of the bar there is no relevant rest. The error was corrected both in EE (by adding a rest) and GE (by changing the minim to a semibreve). In the main text we give the latter, compliant with the notation of A.

category imprint: Differences between sources

issues: EE revisions , Errors in FE , GE revisions

b. 27

composition: Op. 10 No 12, Etude in C minor

Dotted rhythm in A

Semiquavers in FE (→GE,EE) 
..

Chopin changed the rhythm of A while proofreading FE (there are visible traces of this change). The withdrawal from the rhythmic underlining of the topmost note of the passage may be related to a minor change in the Etude's concept, revealed also in increasing its tempo. See also bars 30 and 32.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE , Dotted or even rhythm

b. 27

composition: Op. 10 No 12, Etude in C minor

d3 tied in A

d3 repeated in FE (→GE,EE) 
..

The sustained d3 note is most probably the original version. Chopin interfered with the text of FE in this bar on a number of occasions (rhythm in the L.H.,   a2), e.g., by adding a slur over both d3 notes, hence we can assume that he at least accepted the lack of hold.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE

b. 30-32

composition: Op. 10 No 12, Etude in C minor

Demisemiquavers in A

Semiquavers in FE (→GE,EE) 
..

Double dotted rhythm (with a demisemiquaver) at the end of bars 30 and 32 in A was changed by Chopin during a proofreading of FE (→GE,EE). The change has an undeniable impact on the expressive character of these motifs, however, it also cannot be excluded that it is related to the acceleration of the Etude's tempo, which was also introduced in a proofreading of FE. Cf. bar 27.
In FE bar 32 includes an erroneous rhythm, as the e1-e2 quaver is extended with two dots, despite the fact that the next octave is a semiquaver. It may be a result of an inaccurately performed proofreading.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE