Named after a monolithic Hong Kong city notorious for brothels, opium dens, and general lawlessness, this San Francisco quartet delivers the sonic equivalent of living with 50,000 other people in an area one-hundredth the size of Emeryville. Its five-track EP is stoner-sludgy and punishingly heavy, yet more than dynamic enough to skirt fatigue.
At Thee Parkside (1600 17th St., San Francisco) on April 29. 9 p.m., $5
