Inner-city African Americans Invented Hip Hop Music. DJ Kool Herc is however, credited with helping originate hip hop music.
Hip Hop was invented in 1970s.

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 1970s which consists of a stylized rhythmic music that commonly accompanies rapping, a rhythmic and rhyming speech that is chanted.