GE2
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The traces of division of the slur can be seen also in Morch, in the quintet parts. Perhaps it made the reviser of GE2 introduce a similar change. Slurs over rests are nothing unusual in Chopin's works – cf. e.g. the Mazurka in G minor, Op. 24 No. 1, bars 3, 7 and analog. The addition of slurs for the L.H. in the editions is most probably a revision of GE1 – see bar 267.
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category imprint: Differences between sources
issues: GE revisions
notation: Slurs