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Source:
p. 5, b. 89-107
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In FC and FE there is no 
raising b to b in the 2nd half of the bar. This patent inaccuracy was corrected in GE and most probably in EE, as the defect was present probably in all Stichvorlage manuscripts. The sharp added in FE2 before the 11th semiquaver was probably an attempt to correct this inaccuracy, a doubly failed attempt – the sign was added three semiquavers too late and at a wrong pitch.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: Inaccuracies in FE, GE revisions, Inaccuracies in FC
notation: Pitch
Missing markers on sources:
FC, FE1, FE2, FED, FEJ, FES, GE1, GE1a, GE2, GE3, EE1, EE2, EE3, GE1b