mUltimate Chopin

Op. 25 No 9, Etude in G♭ major

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b. 8

composition: Op. 25 No 9, Etude in G♭ major

Slur in GC (→GE)

Slur & dots in FE & EE
..

The sources do not give reasons for concluding how the difference in the articulation in the R.H. in the 1st half of the bar occurred. The slur of GC seems to be added by another hand than the majority of the remaining slurs of the Etude, which suggests Chopin's intervention. However, it is only an addition, as the manuscript had not included any articulation indications in this place. The addition of the slur could have been related to the addition of accents in the entire first period, in particular to the three accents breaking the scheme in the discussed bar. Due to this fact, we adopt the slur of GC (→GE) to the main text.

category imprint: Differences between sources

issues: Authentic corrections in GC

b. 9-13

composition: Op. 25 No 9, Etude in G♭ major

..

In GC (→GE1), FE and EE there are no naturals raising c to c in bars 9 and 13 and c1 to c1 in bar 12. These are Chopin's obvious oversights, while the signs were added in FED (in bar 9) and FEJ and FES (all).
GE1 also omitted the  raising c1 to c1 in bar 10. GE2 (→GE3) features the correct text. 

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , Errors in FE , Annotations in FED , Errors in EE , Errors in GE , GE revisions , Omission of current key accidentals , Annotations in FES , Annotations in FEJ

b. 11-12

composition: Op. 25 No 9, Etude in G♭ major

 in GC (→GE)

No sign in FE & EE
..

The missing hairpins in FE and EE seem to be Chopin's oversight here at the time of preparing Stichvorlage manuscripts.

category imprint: Differences between sources

b. 12

composition: Op. 25 No 9, Etude in G♭ major

g in chord in GC (→GE) & EE3

No g in chord in FE & EE1 (→EE2)
..

The g note was added (in pencil) in GC (→GE). Therefore, it is highly likely an addition introduced by Chopin in the last phase of corrections in Stichvorlage manuscripts. The version was adopted in EE3.

category imprint: Differences between sources; Corrections & alterations

issues: EE revisions , Accompaniment changes , Authentic corrections in GC

b. 12

composition: Op. 25 No 9, Etude in G♭ major

..

In the main text we add a cautionary  before e. The sign was added already in GE1 and repeated in EE3. In GE2 (→GE3) a  was added also before g.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions