Two-day passes for this year's combination A.V. Fest/Hideout Block Party are selling faster than we anticipated, and while we don't want to jinx anything, there's a good possibility that two-day passes will be gone very soon. (Consider this a warning.) Single-day tickets will be extremely limited (and only marginally cheaper than a two-day pass), so if you want to see Wilco, Iron & Wine, Glen Hansard, Wye Oak, and more (and you do), head over to hideoutchicago.com. It's gonna be a hoot.