Contrary to prior announcements, the Intonation Music Festival, organized by Chicago-based Pitchfork, will be selling tickets in advance. Pre-sales begin this Wednesday, May 18th, at noon via the web. There's a limited quantity of 2-day passes available for $22, or you can purchase single-day admission for $15 (which, we should note, represents another adjustment -- the originally announced price was $10/day). The other major switch is the venue: rather than Pulaski Park, the concert will now be held in Union Park. So basically everything is different, except maybe the acts, and even they are "subject to change without notice."