Shannon McNally's voice will stop you in its tracks. It's a voice with a lazy, laconic lilt and a flinty edge and attitude. McNally calls her music "blues-Americana," but that's two well-worn words that, in this case, fall short. This woman's songs, in tone and topic, pack a wallop with her understated delivery. She's been in the studio with Rodney Crowell; big things are around the corner.