Post-rock enthusiasts Grimace Federation will be opening for one of their greatest influences, legendary Norwegian nine-piece Jaga Jazzist, this evening at Union Transfer. The local trio has been rather dormant about releasing new material of late, but all that will change soon with their forthcoming EP The Measure In Mixture, surprisingly due out via well-respected Minneapolis hip-hop record label Rhymesayers. The album will feature two new tracks from the band as well as a couple of insane remixes from longtime friend and collaborator Aesop Rock. Also along for the wild ride tonight will be LA via Nashville’s Among Savages (a.k.a. Peter Barbee). Union Transfer, 1026 Spring Garden St., 8pm, $22, All Ages – Alexis V.