Ever since the mid 1800s and the birth of the American culture, America has produced some of the greatest and unique (European Classical mixed with Black Folk) Classical music of all time, here are just some of Americas greatest composers.
http://www.ranker.com/list/greatest-american-classical-composers/zachthemusicmage,
Aaron Copland
Charles Ives
George Gershwin
Irving Berlin
John Cage
Leonard Bernstein
Philip Glass
Samuel Barber
Scott Joplin
Steven Foster