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b. 23

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

..

The  lowering g1 to gwas omitted in EE2. This patent error was corrected in EE3 (→EE4).

category imprint: Differences between sources

issues: Errors in EE

b. 24

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

e b-c1-e1 in AI

e b-c1-e1 in FE (→EE2EE3)

e b-c1-e1 in GE & EE4

Our variant suggestion

..

Each of the three source versions may correspond to Chopin's intention, yet at the same time in each of them there may be errors, as in the case of AI and FE and previous EE,s, or a foreign intervention, which most probably took place in GE and EE4. The e quaver is the original version and there is no doubt that it was then changed by Chopin to e. In the main text we suggest b-c1-e as the last chord in the R.H., emphasising that the sound of the topmost note is uncertain.

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

issues: EE revisions , GE revisions

b. 24

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

..

We add a cautionary  before a1. The sign was added in GE3 (→GE4GE5) and EE4. In AI there is no cautionary  before d1.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions , Cautionary accidentals

b. 26

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

g1 in AI & GE

g1 in FE (→EE)

..

AI has a gas the 11th semiquaver, otherwise written with a superfluous . Chopin had to then change it into a g1, which is featured in FE (→EE). The fact of not considering this change in GE – unless it is a common mistake of the engraver – may reveal that it was not introduced until the last proofreading of FE. In GE4 (→GE5) the  was deleted, unnecessary in the version with g(together with the equally superfluous  before a1 on the penultimate semiquaver).  

category imprint: Differences between sources

issues: Errors in GE , Authentic corrections of FE

b. 26

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

..

In AI and FE (→EE2) there is no  before the upper note of the octave (b2). This patent – and typical – inaccuracy of Chopin's notation was corrected in GE and EE3 (→EE4).

category imprint: Differences between sources

issues: EE revisions , Errors in FE , Accidentals in different octaves , GE revisions , Errors of A