Luther "Guitar Junior" Johnson was a blues guitarist with an impressive résumé, backing Muddy Waters, Magic Sam, and John Lee Hooker before he found fame on his own, earning a following for his soulful vocal style and incisive guitar work. A solid performer in the Chicago style, Johnson found his greatest success while working out of New England, with 1990's I Want to Groove with You and 1992's It's Good to Me capturing his impassioned attack and wiry soloing. Latter-day efforts like 2001's Talkin' About Soul showed he'd lost none of his swagger with the passage of time, and 2...