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Op. 10 No 7, Etude in C major

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Rhythm

b. 30-31

composition: Op. 10 No 7, Etude in C major

Ties in A

No ties in FE (→GE,EE)
..

The ties sustaining g1 in bar 30 and f1 in bar 31 visible in A were removed by Chopin in a proofreading of FE (→GE,EE).

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE

b. 33

composition: Op. 10 No 7, Etude in C major

Crotchet g in A

No crotchet in FE (→GE,EE)
..

Omission of the additional stem extending g in FE (→GE,EE) is probably a result of the engraver's distraction.

category imprint: Differences between sources

issues: Inaccuracies in FE

b. 34-48

composition: Op. 10 No 7, Etude in C major

..

In bars 34-35 and 48 in A there are characteristic extended stems next to c1 notes in the part of the R.H. written in the treble clef (in the L.H. the effect is noticeable also in the notation of the C grace note at the beginning of bar 38). In another context they could have been considered as additional crotchets, which was very frequent in Chopin's works, cf., e.g., the Mazurka in Bminor, Op. 24 No. 4, bar 23.

category imprint: Source & stylistic information

issues: Uncertain notes on ledger lines

b. 36

composition: Op. 10 No 7, Etude in C major

c repeated in A

c tied in FE (→GE,EE)
..

The tie sustaining c was added by Chopin in a proofreading of FE (→GE,EE), same as in analogous bar 3. 

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE

b. 38

composition: Op. 10 No 7, Etude in C major

Rhythm in A, literal reading

A, possible interpretation

FE (→EE3)

GE with shifted accent

EE4 with two accents
..

The rhythm of A, interpreted literally, is unclear. Aligning the notes of the L.H. under the part of the R.H. suggests that Chopin thought of an analogous version to the version of bar 34 in this place. In the main text we adopt the version of FE (→EE3), as it is the latest authentic source, while the notation therein is faultless and unequivocal. The suggested variants include also different placement and number of accents in GE and EE4, most probably or certainly non-authentic.

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues: Errors in FE , Rhythmic errors , Errors of A , Authentic corrections of FE