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Verbal indications

b. 16-18

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

No markings in AI

 in FE (→GE,EE)

 suggested by the editors

..

The error of FE (→GE,EE) in bar 16 is undeniable:

  •  appears in the editions in three strictly analogous bars 18, 20 and 22;
  •  is rewritten already at the beginning of bar 16.

In all the aforementioned bars AI has only accents, without additional indications. Cf. bars 20-22.

category imprint: Interpretations within context; Differences between sources

issues: Inaccuracies in FE , fz – f

b. 25

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

No marking in AI

 in FE (→GE,EE)

..

Similarly to bars 16, 18, 20 and 22, AI has only an accent without  in this and the next bar.

category imprint: Differences between sources

b. 26

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

No marking in AI

 in FE (→GE,EE)

 suggested by the editors

..

 in FE (→GE,EE) is clearly the engraver's mistake here. It is revealed by  in the analogous situation in the previous bar and by a number of other obvious examples of distortion of this mark (see, e.g., the note to bars 16-18).

category imprint: Interpretations within context; Differences between sources

issues: Inaccuracies in FE , fz – f

b. 34

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

 in AI

 in FE (→GE,EE)

 suggested by the editors

..

, uncommon in Chopin's autographs, is probably erroneous. Out of a few possible conjectures –  – we suggest , which, according to us, corresponds best to the context between cresc. and . Cf. bars 1 and 16.  

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Inaccuracies in FE , fz – f

b. 46

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

No indication in AI

in FE (→GE,EE)

..

Lack of the con forza indication in AI may be related to the presence of accents.

category imprint: Differences between sources