急！！ 求有关hiphop 的英文文献

Hip-Hop is cultural terms, including rap (Rapping) DJing (DJing) Graffiti (Graffiti) Hip-Hop (Breaking)
That sing from the age of 60, but as a musical understanding of Hip-Hop was originated in the early 70s, it was formerly RAP (sometimes add a little R & B). This is a completely improvised freestyle style of music. This kind of music does not contain any stylized, binding elements. At any time, any place you can Hyun Hip hop as long as you hight.
Hip-Hop literally, Hip is hip, Hop is the swing, is a light torsion buttocks together, is former U.S. Bengdi (of course not like let's, they are swinging hips, let's was the first-_-) originally refers to the embryonic stages of hip-hop (that is what we said before, break-dancing), then gradually developed into a great concept - we are talking about Hip-Hop culture, including those large clothes, heavy gold jewelry , usually talked on the "YoYo ? what's up?" oral habits - in short that the United States w