The North Mississippi blues is often rightfully viewed as the last refuge of true American country blues. Fat Possum Records owner Matthew Johnson seeks out these folks in the small towns, hoping to allow more people to hear the music, give the musicians a bit more sustainable living and ultimately keep the music alive. You're not likely to find a better example than James Lewis Carter Ford,(T Model Ford), (pictured), who, at 75, is still as tough now as when he was a young man sentenced to a chain gang for murder. The electric blues he plays with longtime drummer Spam is hypnotic--a pulsing rhythmic trance that's a far cry from the grin-and-strum of most contemporary "bluesman." Opening for Ford on this tour is slide player Kenny Brown, who has slashed hot licks with other Miss. bluesman such as Joe Callicott and a long-standing run with R.L. Burnside. Chapel Hill's own Transportation will pull from the guitar rock canon, to get you in the mood. 10 p.m. For more info, 942-5506.