A concerto is a musical composition typically written for a solo instrument accompanied by an orchestra. It usually consists of three movements: fast, slow, and fast again. The soloist showcases their technical skill and expressiveness, while the orchestra provides a rich backdrop, creating a dialogue between the two. Concertos can feature various instruments, such as the piano, violin, or trumpet. Famous composers like Wolfgang Amadeus Mozart and Ludwig van Beethoven have written notable concertos that are still performed today. These works are popular in classical music concerts and highlight the virtuosity of the solo performer.