Portland's Blitzen Trapper have been self-releasing music on their Lidkercow Ltd label since 2003, but it wasn't until their third full-length, this year's Wild Mountain Nation, that their madcap, literate, rootsy indie-Americana psychedelics caught on with bloggers and scribes, landing the group a Sub Pop contract. It's always interesting to catch a band in transition -- the sextet's currently on ...