A professional dancer is a person that performs choreographed body movements, usually as part of a show or production. Dancers are highly trained and skillful artists that commit many long hours of practice and discipline to their trade. Many dancers begin as early as age five and continue training throughout their adult lives to develop their skills and balance. As performers, dancers may be the main performers in a production, like a ballet, or they may be a part of another stage performance and dance while a musician or band plays live music.