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b. 17

composition: Op. 10 No 9, Etude in F minor

..

AI is missing the  sign (and the remaining dynamic indications in bars 17-20 – see the previous note).

category imprint: Differences between sources

b. 18

composition: Op. 10 No 9, Etude in F minor

Accents in AI

No accents in A (→FEGE,EE)

..

According to us, in the final version the accents of AI were replaced with a slur and cresc. indication, which was an expression of the change of the phrase's performance concept in bars 17-20.

category imprint: Differences between sources; Corrections & alterations

b. 19-20

composition: Op. 10 No 9, Etude in F minor

Fingering written into FED

No teaching fingering

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED

b. 19-20

composition: Op. 10 No 9, Etude in F minor

No markings in AI

 &  in A, literal reading

FE (→GE,EE)

..

The scope of the  mark's validity is not entirely clear in A. It most probably concerns the entire bar, as it was understood in FE (→GE,EE), however, it cannot be excluded that Chopin wanted to suggest here a separation of the motif beginning from the 2nd quaver in the bar – cf. bars 23-24.

category imprint: Differences between sources

issues: Inaccuracies in FE , Centrally placed marks

b. 20-21

composition: Op. 10 No 9, Etude in F minor

No fingering in AI & A (→FEGE)

Fingering in EE

..

The fingering added by Fontana in EE does not bring any new elements to the fingering following from Chopin's hints.

category imprint: Differences between sources

issues: EE revisions