As promoters of roots music the Roadworks agency haven’t been around for very long but they’ve quickly shown themselves capable of tempting some of the most interesting musicians on the international scene out of the orbital pull of London, at least as far as the little moon that is Dublin. Of all the stars in the alternative country firmament, one of the most enigmatic and idiosyncratic is Jason Isbell, who Roadworks will be bringing to the stage of the Workman’s Club on Sunday November 24 (oddly enough, almost exactly a year after his erstwhile band mate Patterson Hood).