The North Mississippi All Stars don't play in New England nearly enough, it seems, but they certainly make it count when they do. Saturday night's marathon show before about 300 fans at Brighton Music Hall in Boston was a 26-song, roughly three-hour-and-20-minute epic that marvelously lived up to the band's stated goal of both preserving classic blues and bringing it into the 21st century. Along the way, there were several covers of classic blues titans' works from decades past, [...]