Hip hop music, also called hip-hop or rap music, is a music genre developed in the United States by inner-city African Americans in the late 1970s which consists of a stylized rhythmic music that commonly accompanies rapping, a rhythmic and rhyming speech that is chanted. It developed as part of hip hop culture, a subculture defined by four key stylistic elements: MCing/rapping, DJing/scratching with turntables, break dancing, and graffiti writing. Other elements include sampling beats or bass lines from records (or synthesized beats and sounds), and rhythmic beatboxing. While often used to refer solely to rapping, "hip hop" more properly denotes the practice of the entire subculture. The term hip hop music is sometimes used synonymously with the term rap music, though rapping is not a required component of hip hop music; the genre may also incorporate other elements of hip hop culture, including DJing, turntablism, scratching, beatboxing, and instrumental tracks. The term Hip hop as used to define the music genre came later, nobody including the African American pioneers who invented the art, the music, the rhymes and the dances in the Bronx, New York in the beginning were calling it Hip hop, in the Bronx people used to call it B-Beat Music that depended also on where in the Bronx you lived.