Piano Sonata No. 8, also known as the "Pathétique," is a piano sonata composed by Ludwig van Beethoven in 1798. It is one of his most celebrated works, characterized by its emotional depth and innovative structure. The sonata consists of three movements: the dramatic first movement, a lyrical second movement, and a lively finale. The first movement features a powerful introduction, followed by a contrasting allegro section. The second movement is known for its beautiful, flowing melodies, while the final movement showcases Beethoven's energetic style. Overall, this sonata exemplifies the transition from the Classical to the Romantic era in music.