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Source:
p. 3, b. 65-96
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There is no 
before the top most note of the chord in bar 79 in A (→GE1op), necessary before g
1 due to the notation in the four-flat key signature. The sign was added in the remaining GE. In bar 80, Chopin did not write a 
before the lowest note of the last chord in A. The sign, although only cautionary in this context, is undoubtedly justified in this place and it was added in GE.
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category imprint: Interpretations within context; Differences between sources
issues: GE revisions, Omission of current key accidentals, Inaccuracies in A
notation: Pitch
Missing markers on sources:
A, As, AI, FE1, FED, FES, GE1op, GE2op, GE1no2, EEC, EEW1, EEW2, GE2no2, GE3op