The Friday night shows here have been top secret for a while, but the folks at Vulcan Radio said we can tip off our readers. Vulcan Radio is a Web station that hosts live concerts on weekends in a warehouse somewhere in East Oakland. The mysterious to-do is dubbed Barbara's Cocktails, and it features Bay Area bands like Persephone's Bees, Tres Pistolas, and October Allied. There is no cover, the booze is free (yes, free
) or BYO, and you have to be 21 to get in. It's basically a private party, open to anyone who isn't a nut or a thief or who is resourceful enough to find the secret location.