Heroes of the record-geek-catnip ’70s movement known as power pop gather for a two-night blowout. Headlining tonight is cult-fave Oklahoma songsmith Dwight Twilley (whose "I'm on Fire" went to No. 16 back in 1975), with support from Pezband and 1-800-Band. The Sat 10 lineup features unjustly obscure Illinois crew Shoes and veteran rock & roller Paul Collins—formerly of seminal ’70s-era trio the Nerves and currently of the Paul Collins Beat. This ought to be pure throwback magic.