小知識:
Hip hop or hip-hop is a cultural movement that formed during the late 1960s among African American youths residing in New York City. It became popular outside of the African American community in the late 1980s and by the 2010s became the most listened-to musical genre in the world. It is characterized by four distinct elements, all of which represent the different manifestations of the culture: rap music (oral), turntablism or "DJing" (aural), b-boying (physical) and graffiti art (visual). Even while it continues to develop globally in myriad styles, these four foundational elements provide coherence to hip hop culture. (from wikipedia.org )