Chopin never published his "Fantasie Impromptu," and it was almost lost when "Chopin made his sister promise to burn it after his death." (Option A)
Despite being completed in 1834, Fantaisie-Impromptu wasn't made public until 1855, two years after Chopin's passing.
In fact, it's possible that the composer didn't even want us to know about the piece because one of Chopin's last requests was to prevent posthumous publication of unpublished manuscripts.
Fantaisie-Impromptu in C minor by Frédéric Chopin was written for solo piano. It is among his most well-known works. 1834 saw its composition.
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