Beethoven's piano pieces are some of the most iconic works in classical music. His Sonata, TRIO, Minueting, and Moonlight Sonata are all renowned for their beauty and complexity. The Sonata is a multi-movement work that typically includes a slow movement, a fast movement, and a closing movement. The TRIO is a three-movement work, usually with a slow movement, a fast movement, and a closing movement. The Minueting is a dance-like piece, often in triple meter. Finally, the Moonlight Sonata is one of Beethoven's most famous works, and is a single-movement piece with a slow introduction and a fast finale.