Every year it's almost a guarantee that the performers that blow away the Ann Arbor Folk Festival's crowd will be booked in the following months at The Ark. And with stunning tenor, brutal honesty, and powerful believability, all driven by a melancholy piano, Seth Glier was clearly hot on the target list. His ability to take over a room, no matter what size, is uncanny for one guy. But this dude certainly has some pipes. 8pm. $15. The Ark, 316 S. Main. 734-761-1800. www.theark.org. —SR