-- Audiofly: Euroduo (England's Anthony Middleton and Italy's Luca Saporito) throw down here in the states. Expect lots of basslines, techno-ness, and Italian-pop. Music starts at 9 p.m. Mighty,119 Utah (at 15th Street); $10-12.

-- Annual Hank Williams Birthday Karaoke Sing-Off: Scenesters and country fans alike come to wish this dead guy a happy birthday by crooning one or two of his songs. (Does this mean that Carrie Underwood will receive crazy hipster cred 50 years from now? We can only hope!) Starts tonight at 9 p.m. at The Knockout, 3223 Mission; $7.

-- Bicycle Film Festival Scavenger Hunt: Half race, half historical tour, all stinky fun! Starts tonight at 7 p.m. at Dolores Park, 19th Street and Dolores; free.

-- Bob Rubin, Andrew Donnelly, and Alex Koll: Hot all-male stand-up comedy. Starts at 8 p.m. at Punchline, 444 Battery; $16.