EE1
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The lack of slur to the bottom voice of the R.H. is almost certainly an arbitrary decision of the engraver of FE1, who, aiming at a faithful reproduction of the graphic layout of A (the dots and slur over the notes, between the R.H. voices), was not able to fit the slur in a legible manner.
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category imprint: Differences between sources
issues: Errors in FE
notation: Slurs
