The boys from Valient Thorr, some of whom were in attendance at last night’s killer Double Negative/ Birds of Avalon/ Whatever Brains house show, will kick-off their pre-SXSW tour a week from tonight (Sunday, March 1) at Tir Na Nog. It’s a major coup in bartender Chris Tamplin’s bid to position the Irish pub as a legitimate rock venue in the absence of King’s. Chapel Hill’s Caltrop, whose Murat Dirlik helped Thorr cover Funkadelic for their Raleigh Undercover set a month ago, are slated to open the $7 show at 10:30 p.m.