John Phillip Sousa was an American composer and violinist of the late Romantic period. He is mainly known for his military marches. He is also known as the March King. Among his best know works are The Stars and Stripes Forever, Semper Fidelis, and the Washington Post March. He was director of the United States Marine Corps Band. Under his baton the Marine Band became the main musical ensemble for the United States armed services.
He wrote 137 marches 14 operettas, and five overtures along with over 300 arrangements of symphonic works.