Enter a clue or pattern or both:
The Clue
Chopin's "Raindrop" Prelude is in it (5 letter answer)
The Answer
DFLAT
Tags
Notes
The answer DFLAT is rarely seen, appearing only about once every 1000 puzzles.
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C sharp
Certain keynote
C sharp equivalent
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Liszt's "Consolation No. 3" is in it