He ain't seen me crazy yet, Miranda Lambert sings of a no-good ex on the opening track of her sophomore album. The Texas firebrand ups the ante here, delivering a set that moves between the unveiled threats of "Gunpowder Lead"and the tender balladry of "More Like Her. "This is country music at its most manic, with Lambert capturing both the half-cocked highs and lovesick lows of the album' s titular protagonist.