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b. 74

composition: Op. 10 No 4, Etude in C♯ minor

..

In GE3 the  returning e2 on the 5th semiquaver of the bar was overlooked.

category imprint: Differences between sources

issues: Errors in GE

b. 75

composition: Op. 10 No 4, Etude in C♯ minor

g2 in AI

g2 in FE (→EE)

g2 in GE

..

Lack of the  returning g2 in GE may reveal the fact that the sign was not added until the last proofreading of FE (→EE). The sharp became necessary here due to enharmonic changes in the notation of the previous group.

category imprint: Differences between sources

issues: Errors resulting from corrections , Authentic corrections of FE

b. 75

composition: Op. 10 No 4, Etude in C♯ minor

..

In AI the first 3 semiquavers in the 2nd half of the bar are written as f2-g2-f2 in the R.H. and f1-f1-f1 in the L.H. Chopin changed the notation in a proofreading of FE (→GE,EE). However, he left the sharps before f1 and f2 at the beginning of the last semiquaver group, superfluous after the change.

category imprint: Differences between sources; Editorial revisions; Corrections & alterations

issues: Enharmonic corrections , Authentic corrections of FE

b. 75-77

composition: Op. 10 No 4, Etude in C♯ minor

No fingering in AI & FE (→GE)

Fingering in EE

..

The fingering of EE is an addition by Fontana.

category imprint: Differences between sources

issues: EE revisions

b. 79-80

composition: Op. 10 No 4, Etude in C♯ minor

Fingering in AI

FE (→GE,EE)

..

In the main text we give the fingering of FE (→GE,EE). It develops the indications written in AI, which are less detailed, yet unambiguous.

category imprint: Differences between sources

issues: EE revisions