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b. 17
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composition: Op. 25 No 1, Etude in A♭ major
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In all sources related to the publication process of the Etude (A and editions), the bar is provided with a pair of dynamic hairpins. However, the sources or their groups differ quite significantly, as far as the range of the signs is concerned. In the main text, we give the signs of FE, showing similarity to the indications in analogous bar 19. Chopin could have written such hairpins in the base text to FE or added while proofreading this edition. GE2 (→GE3) also include a similar version, probably revised on the basis of comparison with bar 19. category imprint: Interpretations within context; Differences between sources issues: Scope of dynamic hairpins |
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b. 17
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composition: Op. 25 No 1, Etude in A♭ major
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The version of EE may be erroneous, which is indicated by the compatibility of the remaining sources, as well as by the pedalling in analogous bar 19. category imprint: Differences between sources |
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b. 17-18
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composition: Op. 25 No 1, Etude in A♭ major
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The sources differ in the size of note heads of the third semiquaver in each of the groups. In the main text, we give the version of FE, confirmed by Chopin proofreading of GE1a (→GE2→GE3). The heads of normal size ("big") signalise here the appearance of an additional melodic line in the tenor voice. In the remaining sources, the voice is not distinguished (EE) or it appears only at the beginning of bar 18 (AI and A). category imprint: Differences between sources issues: Inaccuracies in GE , EE inaccuracies , Authentic corrections of GE |
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b. 17-18
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composition: Op. 25 No 1, Etude in A♭ major
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The differing abbreviated notation of AI and A could suggest that in the latter all four E notes are supposed to have normal ("big") note heads. According to us, the notation of A, despite being simplified, is to be, however, interpreted in accordance with AI – in A we see the same abbreviation also in bar 36, in which the distinction of only the first A In GE1 (→GE1a), the first F in bar 18 is written as a small note. The mistake was corrected in GE2 (→GE3). category imprint: Interpretations within context; Differences between sources |
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b. 18
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composition: Op. 25 No 1, Etude in A♭ major
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In the main text we give the category imprint: Differences between sources; Corrections & alterations issues: Scope of dynamic hairpins |
in 
in 
is beyond any doubt. Similarly in bar 19.
