Hip-hop is a genre of music and cultural movement that originated in the Bronx, New York City in the 1970s. It is characterized by rhythmically spoken lyrics over a beat, often accompanied by scratching and mixing by a DJ. Hip-hop music often addresses social and political issues, and is known for its innovative use of sampling and musical techniques. The culture of hip-hop also includes elements such as graffiti art, breakdancing, and fashion. Hip-hop has become a global phenomenon, influencing music, art, fashion, and popular culture worldwide. Researchers in this area may study the history and evolution of hip-hop, its impact on society, and the cultural and artistic expressions within the genre.