JC
Main text
JC - Jędrzejewicz Copy
PE - First Polish Edition
EF - Editions by Fontana
FEF - French edition by Fontana
GEF - German edition by Fontana
compare
  b. 67

The cautionary  before a1 is already in JC and EF.

Compare the passage in the sources »

category imprint: Differences between sources; Source & stylistic information

issues: Cautionary accidentals

notation: Pitch

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Original in: Muzeum Fryderyka Chopina, Warszawa