The music of the United States reflects its diverse population and includes genres such as blues, jazz, country, rock and roll that have gained global popularity. American music evolved from Native American folk music and work songs brought by African slaves and European styles, developing in the 20th century into major genres like hip hop, pop, and R&B through the blending of diverse influences. The United States now has one of the largest music industries in the world and its music continues to blend styles from around the world into new forms.