Drill music is a style of trap music that originated in the South Side of Chicago in the early 2010s and is defined by its dark, violent, nihilistic lyrical content and ominous trap-influenced beats. A regional subgenre, UK drill, rose to prominence in London, particularly in district of Brixton, beginning in 2012 and has spread across the UK with Birmingham being prominent. 

Drill music has been subjected to widespread media hysteria due to the lyrical content and links to gang culture. This has led to police involvement with some Drill artists being banned from recording songs and videos being removed from You Tube. 

23 Drillas are one of the leading crews in Birmingham but a number of the band have recently been jailed for gun offences.