Fantasie in F-sharp minor, Op. 28, by Felix Mendelssohn, is a work composed for piano in three movements to be played without pause. This work was also known as Sonata écossaise (Scottish Sonata). First an Allegro in F-sharp minor in a loose sonata form, then an Allegro con moto in A major, and third a finale in F-sharp minor, in sonata form with double-bar. Its final version dates from 1833, original version was probably composed as early as 1828.[1] [2]