(DRUM 'N' BASS) While the War Room's weekly drum-n-bass night has history and a sizable chunk of the genre's Seattle fan base on its side, Onset is strongly challenging the incumbent for jungle supremacy. In Temple Billiards' basement, bass (and drums, obviously) caroms 'round the cozy room with the high-impact potency beloved by junglists everywhere. Tonight UK ringer Chris Renegade spins with Grym and Devise. (Deep Down Lounge in Temple Billiards, 126 S Jackson St, 276-7543. 10 pm–2 am, $6 [cover varies depending on lineup], 21+.) DAVE SEGAL