Wilco Rip Open the 'Sky' at Bonnaroo

Wilco, a band known to insert dissonant jams inside heartbreakingly beautiful songs, got in the Bonnaroo mode early on several levels during their Day Four performance, offering up atmospherically appropriate tunes like 'Handshake Drugs' and 'Shot in the Arm,' among others. Jeff Tweedy and Co. didn't just stick to the familiar, taking new songs including 'Impossible Germany' -- off their latest album 'Sky Blue Sky' -- to the outer limits of sonic space.

"I usually hate these things," Tweedy said to the crowd, referring to music festivals. But seconds later the frontman reassured the crowd that the band was having a good time -- even if it was postively sweltering. "It's too hot for me to ask how you're doing," he joked.

Often called a "musician's musicians" band, Wilco was one of the only bands to get an encore at Bonnaroo, playing 'The Late Greats' and 'Heavy Metal Drummer,' while musicians from the Grateful Dead's Bob Weir to members of the Slip, Benevento/Russo Duo, American Babies and others watched intently from the scaffolding.