If you’ve ever flashed that all-powerful student ID and sardined yourself into Porter’s for a live show, you know how all-wrong the concert room is — a haphazard structure lined in nappy carpet, with weird corner angles and puzzling columns right where any normal mosh pit would try to be; let’s just say there doesn’t seem to have been an architect or interior designer involved. But it’s hard to feel like part of any scene when it’s not a little lived-in (cough cough, Loft) — the Pub has a rich history of hip-hop shows that squeeze their DJs and mic-rats onto that awkward, dusty-black stage and force us right into their line of fire, a sweaty little community that never forgets to take a beer break.

Tonight’s deliciously obscure set list is so packed, the talent could probably fill the entire audience space as well: At least seven fired-up undergrounders will be making the trafficked commute down from Los Angeles this afternoon, ready to fill the already crawling pub with the kind of scene only our uber-urban northern star could breed. At the front lines fly the smooth sails of Shawn Jackson — grounded in a retro, dressed-sharp old school — and the Mr. Liffy weasel-flow of Godlee Barnes, followed up by unadvertised star of the evening, the groovy, snaky Blu, best known for his work with producer Exile.

La-La Land ain’t skimping on the boards, either. We got wiggly space-hopper Ras_G, the chopped and screwy Samiyam and big man on campus DJ House Shoes, four albums under his belt and a regular list of guest stars. Also along for the ride is San Diegan (represent!) DJ Artistic, spilling his marbles all over the pub’s squeeze-space. It’s OK — we like when things get messy around here.

Porter’s Pub will host a live hip-hop show on Oct. 30 at 7:30 p.m.