Italian-born Classical period composer and pianist Muzio Clementi (1752-1832) spent much of his life in England as student, pianist, composer, conductor, a manufacturer who produced the first modern pianos, and music publisher. His eighty years spanned portions of many of music's greatest composers and he often played with them. He was also Beethoven's English publisher. While some of his works have disappeared from regular playing, many of his pieces are still popular. Among them are his sonatas and the studies of Gradus ad Parnassum.