Jazz became organized as a musical genre in the United States in the early 20th century, but its roots originated in the l9th century in the South. The Atlantic Slave Trade brought over half a million Africans to America and with them came musical influences from their native land. As African americans learned to play European instruments in the 19th century and developed their own styles of music, like the cakewalk. The Cakewalk is a combination of harmony and syncopation. It became very popular and caught on among white folk, and was played in minstrel shows.Toward the end of the 19th century, a new style of music emerged called ragtime. After the abolition of slavery, opportunities to learn opened up to many African americans. However, there were not many job openings. Many talented African americans took jobs as musicians in minstral shows, in bars and clubs. Ragtime was created in the red-light districts of New Orleans and was a modifcation of the march, characterized by polyrhythms and syncopation. It was very upbeat and perfect for dancing. Ernest Hogan was a black entertainer who first recorded ragtime on sheet music in 1895. It became very popular music