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b. 1
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composition: Op. 10 No 11, Etude in E♭ major
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In the remaining sources the wedge of A (→FE) was recreated as a staccato dot. It is unclear how this divergence surfaced, yet it is not an issue of significance in terms of determining the correct text of the Etude. category imprint: Differences between sources issues: EE revisions , GE revisions , Wedges |
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b. 1-14
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composition: Op. 10 No 11, Etude in E♭ major
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The dynamic hairpins written in A in bars 1, 2, 6, 10 and 14 were not printed in the editions and those in bars 5, 9 and 13 were inaccurately reproduced. Changes in the signs' range are undoubtedly accidental, therefore, in the main text we follow the notation of A. On the other hand, it is unclear whether the omission of the details can be fully blamed on the engraver's inaccuracy (or perhaps haste). The musical image transferred by FE, although less detailed, seems to be convincing and could have been accepted by Chopin. Therefore, we consider the two main, source sets of signs – A and FE – to be equal and we suggest them in the main text in the variant form. category imprint: Interpretations within context; Differences between sources; Corrections & alterations issues: Inaccuracies in FE |
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b. 1-3
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composition: Op. 10 No 11, Etude in E♭ major
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The fingering added by Fontana in EE is not justified by any of the authentic sources; moreover, it is, presumably, only one of the possible solutions, convenient rather for small hands. category imprint: Differences between sources issues: EE revisions |
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b. 1
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composition: Op. 10 No 5, Etude in G♭ major
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In the main text we give the title and dedication in the undoubtedly authentic version adopted in FE. The extensions of both the title (in GE and EE) and the dedication (in EE) most probably come from the editors. See the Etude in C major, No. 1, bar 1. category imprint: Differences between sources issues: EE revisions , Errors in FE , Dedications , GE revisions |
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b. 1
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composition: Op. 10 No 5, Etude in G♭ major
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In A there are visible traces of the time signature's change: from category imprint: Corrections & alterations issues: Changes of metre , Corrections in A |
in 
to 2/4. This may mean that there was a working notation of the Etude in two-time longer rhythmic values (cf. bars 4-12 and 8).