The man being held in Austin for that fatal car assault at the South by Southwest festival was in town to perform during it, according to reports. Rashad Charjuan Owens, 21, is an aspiring rapper who goes by the name KillingAllBeatz or K.A.B254. Mixes, posted on a SoundCloud account that matches his rapper name and mugshot, have attracted scores of comments in the past 24 hours.