GE1
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Only GC (→GE) has the slur above the lower voice motif in the two hands part. The slur in GC begins from the rest, which could suggest that it is connected with the quadruple marking (cf. bars 5-6). However, that interpretation is contradicted by the right end of the slur that clearly reaches a in bar 14.
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category imprint: Differences between sources
notation: Slurs