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b. 12-20
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composition: Op. 50 No. 2, Mazurka in A♭ major
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The cautionary flats before a category imprint: Differences between sources issues: Cautionary accidentals , FE revisions |
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b. 16
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composition: Op. 50 No. 2, Mazurka in A♭ major
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In the main text we add cautionary flats before e category imprint: Differences between sources; Corrections & alterations issues: Cautionary accidentals , FE revisions |
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b. 19-20
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composition: Op. 50 No. 2, Mazurka in A♭ major
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Due to the following reasons, in the main text we include the pedalling of GE in a variant form only:
There is a similar situation in b. 50-51 and 94-95. category imprint: Differences between sources issues: Inaccuracies in GE |
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b. 20-25
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composition: Op. 50 No. 2, Mazurka in A♭ major
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In b. 20 and 25, GE included upper voice rests on the 1st beat of the bar. Formally necessary, such rests often do not provide any useful piece of information in piano music notation, hence they were not used by Chopin. Therefore, it is highly likely that their presence in GE is a result of a revision. category imprint: Differences between sources issues: GE revisions |
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b. 23
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composition: Op. 50 No. 2, Mazurka in A♭ major
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In the main text we adopt the notation of the principal source, i.e. GE, undoubtedly repeated after [A2]. It is unclear what Chopin's motivation was when he changed the category imprint: Differences between sources; Corrections & alterations |
1 in b. 12 and 20 were added in the first phase of proofreading of 
asterisk in b. 19 is almost certainly misplaced;
in 
