ONEFOUR (stylised in all caps) are an Australian drill and rap group originating from the Western Sydney suburb of Mount Druitt. They are regarded by many as the pioneers of drill-rap in Australia. Paving the way for the Australian Drill scene, heavily influenced by the drill scenes of the UK and New York. The group consists of 5 core members, Spenny, YP, Celly, Lekks, and Jemz. YP and Jemz are brothers.