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Op. 10 No 2, Etude in A minor

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b. 1-5

composition: Op. 10 No 2, Etude in A minor

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In bars 1 and 5 in CLI there are no naturals returning a1, d2 and f2. The signs were also originally absent in FEcor (→FE,EE), in which Chopin added all of them. A correct notation is featured in Ap too. Similarly as in all subsequent repetitions of this bar (bars 9, 13, 36 and 40). 

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category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , Authentic corrections of FE

b. 1-5

composition: Op. 10 No 2, Etude in A minor

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Before the last semiquaver in bar 1 FE (→EE2) has an undoubtedly authentic cautionary . The revisers of GE and EE3 (→EE4) added it also in bar 5. According to us, the signs in such a regular figuration are superfluous.

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category imprint: Differences between sources; Editorial revisions

issues: GE revisions , Cautionary accidentals

b. 1-5

composition: Op. 10 No 2, Etude in A minor

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The cautionary accidentals before c1 in the L.H. were added in the L.H. in one of the last proofreadings of FE (→GE). They are also included in EE, apart from the  missed in bar 5 in EE2 (the engraver of EE also omitted  in bar 6, thus there are no accidentals on the entire stave of the 3rd great stave). This undoubtedly necessary addition probably comes from Chopin, although the signs are not to be found in any of the manuscripts.

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category imprint: Differences between sources

issues: Cautionary accidentals , EE inaccuracies , Authentic corrections of FE

b. 2-6

composition: Op. 10 No 2, Etude in A minor

Octaves in CLI & FE (→GE,EE) 

Only A in Ap
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Lack of the lower octave at the beginning of bars 2 and 6 in Ap suggests Chopin's hesitation concerning its presence – the octaves are both in CLI, representing the earliest stage of the Etude's notation and in FE (→GE,EE), which ends the shaping process of the piece's text. Similarly in bar 10, 14, 37 and 41.

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category imprint: Differences between sources

issues: Chopin's hesitations

b. 2

composition: Op. 10 No 2, Etude in A minor

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CLI has mistakenly c3 as the 8th semiquaver. A similar mistake in CLI occurs also in bars 10 and 14.

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category imprint: Interpretations within context; Differences between sources

issues: Errors of CLI