The story goes that lightning struck the studio where Greg Brown and Bo Ramsey began making last year’s Yep Roc album Freak Flag, so they picked up, headed to Memphis, and started over with nearly all new songs. And it’s believable, too. Brown, the Midwestern, bohemian folk-bluesman, makes writing songs and enjoying the finished product seem as natural as anything; it’s not hard to picture him relishing the chance to churn out a few more. He’s known for pitching his songwriterly tent in the sweet spot between earthy sensuality and unfussy existentialism. Freak Flag, for one, boasts “Where Are You Going When You’re Gone,” an offhand meditation on life beyond this present reality, set to a swampy dance groove — all the more funky thanks to Ramsey’s sinewy guitar licks — that aims straight for the body. Brown could teach the church pews’ more uptight occupants a thing or two.