Beethoven transformed the piano sonata from a vehicle for virtuosic display into a form capable of profound emotional depth and structural innovation. His 32 sonatas span his entire creative life and chart his evolution from Classical elegance toward the visionary intensity of his late period.
The 'Pathétique' sonata (Op. 13, 1798) emerges at a pivotal moment in his career, when he was grappling with the early onset of deafness while simultaneously pushing past Mozart and Haydn toward something entirely new. This work became one of his most beloved compositions, establishing the template for the Romantic sonata that composers would follow for decades.