Issues : Errors in the number of ledger lines
b. 39
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composition: Op. 10 No 10, Etude in A♭ major
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Despite the fact that the a2-a3 octave is possible as far as the sound is concerned (cf. the Prelude in F minor, Op. 28 No. 8, bars 6 and 20), Chopin's mistake seems to be almost certain here, even due to the pianistic issues. The conclusion is confirmed by Chopin's proofreading performed in this place in FE (→GE,EE). category imprint: Interpretations within context; Differences between sources issues: Terzverschreibung error , Errors in the number of ledger lines , Errors of A , Authentic corrections of FE |