Page:
Source:
p. 12, b. 281-308
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Prezentacja
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There is a cautionary 
before d
1 in the sources, written by Chopin probably in order to avoid a d1 due to b2 in the R.H. and a very frequent use of diminished triads and four-note chords. We omit this sign in the main text, since the d-f-b chord used in this place was highlighted two bars earlier.
Compare the passage in the sources»
category imprint: Editorial revisions
issues: Cautionary accidentals, Last key signature sign
notation: Pitch
Missing markers on sources:
A, Morch, GE1, GE1a, GE2, FE1, FE2, FED, FEJ, FES, EE1, EE2, EE3