Issues : Changed phrase length
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b. 1
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composition: Op. 25 No 1, Etude in A♭ major
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Lack of upbeat in AI is characteristic for the original versions – cf., e.g., the autograph of the first edition of the Mazurka in A category imprint: Differences between sources; Corrections & alterations issues: Main-line changes , Changed phrase length |
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b. 48-49
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composition: Op. 25 No 1, Etude in A♭ major
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Interpretation of the written in pencil ending of the Etude is impeded in AI by limited resolution of the preserved photography. Originally, the piece ends in bar 48: category imprint: Graphic ambiguousness; Differences between sources; Corrections & alterations issues: Changed phrase length |
major, Op. 7 No. 4 or the album autograph of the initial theme of the Nocturne in F minor, Op. 55 No. 1. 
. Chopin then added in pencil an additional bar, yet interpretation of the details of the part of the L.H., which seems to be edited differently than in