Drill music is a subgenre of hip-hop that originated in Chicago, particularly in the South Side. It is characterized by its aggressive lyrics, heavy use of trap-style beats, and often dark and gritty themes that reflect the harsh realities of street life. Drill music often focuses on violence, drug use, and gang culture, and it typically features rapid-fire delivery and explicit language. The genre has gained popularity and spread to other cities, evolving with local variations, but it remains associated with its Chicago roots.