It takes more than a glitzy exterior for a venue to be fly. It's what's inside that counts. That's why the stunning Mesa Arts Center, arguably one of the most stylish arts spots in the Southwest, places a premium on programming happening events like Sound in the Ground. The bimonthly Thursday-evening series plugs the opening of exhibits in the Mesa Contemporary Arts galleries by bringing in local musical acts that represent the displayed shows. Because the art lives on the edgier side, the musicians — ranging from high-energy rock/funk group Attack of the Giant Squid to Terminal 11's electronica freak-out — are geared toward the experimental and improvisational. The larger ensembles perform outside on the spacious courtyard while eclectic DJs entertain folks queuing at the wine and beer cash bar inside. That old racket about Mesa shutting down after sunset just isn't true when SinG is in full effect, cuz the party goes off 'til midnight.