RAP........

Rap is poetry spoken out while music with a heavy drum beat is repeatedly playing in the background. Rap began in the 1970s by African-American disc jockeys who remixed samples of music and then according to the rhythm of the music, talked out lines of poetry. The poetry was usually about the everyday lives of the Rap artists. During the 1800s Rap became more popular due to the simple reason that lyrics and performance improved. 

Many disagree with Rap because of  its content (it talks about Drugs, Murder, Abuse etc.), however, this has not stopped the Rap industry from growing because others enjoy listening to this entirely different style of music.