Question: Sergei Rachmaninoff's "Prelude in C-sharp minor" which played a prominent part in the detective novel "Overture to Death" was a single part of how many pieces to the ternary prelude he composed titled "Morceaux de fantaisie"?
Sentence (from "Prelude in C-sharp minor (Rachmaninoff)"): Prelude in C-sharp minor (Russian: Прелюдия ), Op.
Relevant evidence: No