GC
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As the top most note of the 1st chord, FE1 includes an erroneous a instead of b, which was corrected already in FE2. The mistake must have been in [A], as in GC an identical correction is to be seen.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors in FE, FE revisions, Alterations in GC
notation: Pitch