It's a Thursday night in mid-December and Lori McKenna is dressed in jeans and a baggy, black sweater. In these clothes, she could be driving the car pool, or taking her four kids to the grocery store, but instead she's standing on a stage before a rapt audience of nearly 200, glowing. Her set tonight is a short one. Just a few songs. Then Dar Williams will take the stage as the headliner. She opens with a love song about her husband of fourteen years, and the young man beside me leans in and says, "I want to be her husband." He looks at her there on stage, takes a swig of beer and turns back to me, and says, "If I had to be a plumber and have four kids, it'd be okay if she was my wife."