Produced by ex-Del Lord Eric Ambel in Missouri, a center of the country-rock (and trad-country) revival, Blue Mountain‘s Dog Days is a collection of crafty, homespun tunes that (its paean to Jimmy Carter aside) never seems contrived. The Oxford, Mississippi-based trio plays with Son Volt, the band that includes the Uncle Tupelo songwriter (Jay Farrar) who’s not in Wilco, and Jennifer Trynin at 9:30 p.m. at the 9:30 Club, 930 F St. NW. $5. (202) 393-0930. (MJ)