What are Ludwig van Beethoven’s best-known piano sonatas?

Ludwig van Beethoven composed 32 piano sonatas that are considered a standard of excellence in Western classical music. Among these, some of his most well-known and beloved works include:1

• Pathétique Sonata (No. 8 in C Minor, Op. 13): Notable for its dark, dramatic introduction and its early exploration of the emotional potential of the key of C minor.12
• Moonlight Sonata (No. 14 in C-sharp Minor, Op. 27, No. 2): Famous for its dreamy, arpeggiated first movement and its innovative structure, which the composer described as Sonata quasi una fantasia (sonata in the manner of a fantasia).13
• Appassionata (No. 23 in F Minor, Op. 57): A highly dramatic and technically demanding work that exemplifies the expressive power Beethoven brought to the genre.1

These pieces, along with others like the Waldstein (No. 21) and the Hammerklavier (No. 29), demonstrate how Beethoven transformed the piano sonata from a gracious, amateur-friendly form into a vehicle for profound, symphonic-level expression.1