A piano concerto is a musical composition that features a piano as the primary solo instrument, accompanied by an orchestra. Typically structured in three movements, it showcases the piano's technical and expressive capabilities while allowing the orchestra to provide harmonic support and contrast. The first movement often follows a sonata form, while the second is usually slower and more lyrical. The final movement tends to be lively and energetic. Famous composers of piano concertos include Ludwig van Beethoven, Wolfgang Amadeus Mozart, and Frédéric Chopin, each contributing unique styles and innovations to the genre.