The Fantasy opens with a slow but virtuosic 26-bar piano introduction, modulating from C minor to C major and back again. The main part of the piece, marked "Finale", begins with an Allegro theme played by the cellos and basses. Next, the solo piano introduces the choral theme in an ornamented version. Variations on the theme are then played by the flutes, oboes, clarinets, and string quartet, respectively. A full orchestral version of the theme, played at a "forte" dynamic leads into a more lyrical piano line.