Prelude in F-sharp minor, op Prelude in C-sharp minor op Prelude in C sharp minor, op.45 Prelude in C-sharp minor Prelude in F-sharp minor Prelude in C sharp minor, op. 45 Prelude in C sharp minor, Op. 3 Prelude in C sharp minor,op.45 Prelude in C sharp minor op.45 Prelude in c sharp minor op.45