If you only know Jimmy Griffin as the consummate tribute-show guitarist, you only know half of the story. Griffin's high-profile turns playing the riffs of Keith Richards, Jimmy Page and David Gilmour in increasingly popular tributes to classic rock icons have been a central part of sold-out spectacles at the Pageant and elsewhere — the man simply looks like he was put on this earth to wrangle a Stratocaster behind thousand-watt bulbs, a cigarette Velcroed to his lower lip. His work leading the Incurables is more humble and refined; he's internalized 50 years of rock & roll know-how but largely sets those tropes aside for earnest, melodic songs that suit his smoky but sweet tenor voice.