1 in C major, "Preludio" is the first of twelve Transcendental Études by Franz Liszt.
The piece begins with low octave Cs, followed by a downward run made up of an arpeggiated C7 chord.
A furious set of impetuous notes then climb chromatically, and it returns to the octaved Cs and the downward run.
The left hand then plays loud, low pitched trills in succession.
After that, the right hand plays some intense arpeggiated figures, closing with a final chord.