Issues : Errors in GE

b. 1

composition: Op. 25 No 7, Etude in C♯ minor

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In GC (→GE1) and EE there is no  returning f at the beginning of the 2nd group of semiquavers of the introduction, which almost certainly corresponds to the notation of [A]. It is a very typical mistake of Chopin – cf., e.g., the Nocturne in Cminor, Op. 27 No. 1, bar 83, or the Impromptu in A major, Op. 29, bar 71. The sign was added in the proofreading of FE, most probably by Chopin, as well as in GE2 (→GE3). 

category imprint: Interpretations within context; Differences between sources

issues: Errors in EE , Omissions to cancel alteration , Errors in GE , GE revisions , Authentic corrections of FE

b. 26

composition: Op. 25 No 7, Etude in C♯ minor

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As the 2nd note of the last sextuplet GE1 includes the erroneous D instead of E. The mistake was corrected in GE2 (→GE3).

category imprint: Differences between sources

issues: Errors in GE , GE revisions