C. V. Alkan - 'Symphony for Solo Piano' 1st Movement [Op. 39 No. 4] (Hamelin) 

Performed by Marc-André Hamelin.
The Symphony for Solo Piano is a large-scale romantic work for piano composed by Charles-Valentin Alkan and published in 1857.
Although it is generally performed as a self-contained work, it comprises études Nos. 4-7 from the Douze études dans tous les tons mineurs (Twelve Studies in All the Minor Keys), Op. 39, each title containing the word Symphonie (French: Symphony). The four movements are titled Allegro moderato, Marche funèbre, Menuet, and Finale. Much like the Concerto for Solo Piano (Nos. 8-10), the Symphony is written so as to evoke the broad palette of timbres and harmonic textures available to an orchestra. It is an early example of a piano symphony. In the opinion of François Luguenot, it "does not contain the excesses of [Alkan's] Concerto or the Grande Sonate (Op. 33). But, rather like [Alkan's] Sonatine Op. 61, it proves that Alkan was also capable of writing perfectly balanced and almost ‘Classical’ works." Unlike a standard classical symphony, each movement is in a different key, rising in progressive tonality by a perfect fourth.
The opening movement in C minor is written in sonata form. The thematic material of the Allegro moderato is almost entirely derived from the opening theme, which appears in octaves in the left hand.