 Written in one single movement, it is based on a theme consisting partly of a sequence of chromatic tones hidden behind the intervals of the ninth, the diminish octave and seventh.The composer occasionally uses only a short motive from this theme, extending the theme itself in other places so as it encompass all the twelve notes of the scale and thus manages to build an impressive work.Gradually condensing the musical texture and accelerating the tempo, the author creates a gradation of extraordinary force, reaching the climax in the part marked "con brio".