Tonight the Granada, 1020 Mass. St. plays host to indie rock supergroup Middle Brother. Made up of members of Dawes, Deer Tick and Delta Spirit, Middle Brother plays jangling, lo-fi rock 'n' roll that owes more than a little to Sam Philips and Sun Records. The band is joined, unsurprisingly, by Deer Tick and Dawes, who will perform separate sets before shuffling musicians and becoming the headliner. It's a great indie showcase and it's all courtesy of South By Southwest, which we can thank for many of the better shows to come through on the way to or from the event. The show starts at 8 p.m. with doors at 7 p.m. Tickets cost $15.