There are a million ways to rock, and The Underground Summer Festival are giving you a solid, like, nine, at least. Their lineup of notable Hong Kong bands (highlights: Shotgun Politics, David Boring, and a super special mystery guest) encompass genres spanning from indie-noise, shoegaze, pop-punk, to nü and hair metal. 6pm-12:30am. Attic, 1/F, Grand Business Plaza, 153 Wai Yip St., Kwun Tong. $100 from undergroundhk.com; $150 at the door, includes one drink.