Martin Sexton

Martin Sexton's voice has a brassy timbre, is flexible as a yogi (he can scat, snarl, slide and wail with the best of them) and, most important, the Boston singer-songwriter can hit shamelessly soaring high notes; John Mayer calls him the best live performer he's ever seen. Tonight kicks off a week of intimate, acoustic shows for Sexton, whose current album is Sugarcoating.