Lasting two decades as a venue for live music is a minor miracle these days, so Raleigh's Pour House has every reason to celebrate its longevity. The two-story watering hole on South Blount Street will toast itself in a way that honors its founding principles: with some solid bands in-house and a special pour. The venue has enlisted Raleigh Brewing Company to create a one-time-only libation known as Pour House Imperial Pale Lager, which is sure to slake thirsts in summer's prime. But it's not just about self-congratulations; proceeds will benefit Oak City Outreach, an organization that serves homeless and hungry people in Raleigh. Leading the charge on the evening's musical offerings are the Backsliders. With the gravel-voiced Chip Robinson as their frontman, these raucous honky-tonkers reunited a few years ago and are well versed in the art of tearing it up. The Gravy Boys and Hank & Pattie kick off the fun. —David Klein