Rap and hip-hop originated as cultural movements involving music, art, and dance in the Bronx in the 1970s. DJ Kool Herc introduced techniques like extending instrumental sections that developed into rap. Urban DJs began teaming with MCs who developed rhythmic spoken patterns over backing music. Rap grew in popularity with the 1979 release of "Rapper's Delight." In the 1980s, gangsta rap emerged with lyrics about violence, sex, and drugs. There are various regional styles like West Coast, East Coast, and Dirty South rap as well as subgenres. Famous artists include Run DMC, Jay-Z, Tupac, and Eminem. Rap can be used in classrooms