Sonata No. 8, Opus 13 by Ludwig van Beethoven was subtitled "Pathétique" by the editor, remember that Beethoven did not give the title that we popularly know to any of his sonatas. It was published in 1800, and written in 1799, when Beethoven was 29 years old. Beethoven dedicated the work to his friend Prince Karl von Lichnowsky.
This Sonata is fundamental in piano production for its values of musical abstraction, for its philosophical connotations and future insights of a structural nature: the internal structure of the sonata is the most advanced of Beethoven's early works. It is considered one of Beethoven's master works, and one of the most performed in public, both in Beethoven's own lifetime and today.
La Patética was famous from the moment it was first introduced, and it's not hard to see why; It contains three incredibly engaging movements with very different personalities plus unprecedented expressiveness, and contains some of Beethoven's best musical motifs.
The first and last movements are unified through a single theme; heard, among many other places, at the opening of the first movement, the second theme of the first movement and the opening of the third. Both are intimately linked internally by a set of their own recurring motifs.
The first movement features strangely orchestral textures, there are the vibrant tremolos, the bassoon in the first theme of the second theme group and the tutti which is the second theme of the second theme group. I would also be remiss not to mention that the second move is, how to say ... delightful!