Concerto

A concerto (; plural concertos, or concerti from the Italian plural) is a musical composition generally composed of three movements, in which, usually, one solo instrument (for instance, a piano, violin, cello or flute) is accompanied by an orchestra or concert band. It is accepted that its characteristics and definition have changed over time. In the 17th century, sacred works for voices and orchestra were typically called concertos, as reflected by J. S. Bach's usage of the title "concerto" for many of the works that we know as cantatas.