With ''New Mistakes,'' Canada's Terra Lightfoot offers up something rare: the kind of genuine document that can only come from a road-tested breed of songwriter and performer. Shot through with the guitarist-vocalist's powerful, bluesy soul, vivid lyrics and ferocious six-string virtuosity, it's an unforgettable outing. From the ground-shaking stomp of ''Paradise'' and wild-eyed energy of ''Pinball'' that open the set to the gospel-tinged album closer ''Lonesome Eyes,'' the steeltown native's third record distills her masterful talent to its electrifying essence. Lightfoot's hungriest, most raw album to date, it's also her most accomplished release yet.