I've been to both years of Eaux Claires music festival run by Justin Vernon (Bon Iver) and Aaron Dessner (The National) and will be going again this year. It's the best festival I've ever been to...
Anyway, they held a Reddit AMA and there was this little thing:
[–]alotofstuffisdumb 11 points 2 days ago
David Bazan is looking for a venue in eau claire for a living room show on june 16th...can you just have him play the fest?
[–]EauxClairesWI[S] 15 points 2 days ago
NO shit. hmmmmmm.... yes! jv22
There have been surprise guests and performances every year. This totally seems like a possibility.