Scenes from Bonnaroo

The 11th annual Bonnaroo Music & Arts Festival, the four-day gathering that started on Thursday, included more than 150 bands on stages scattered around its 700-acre grounds. The lineup was diverse but the festival’s jam band foundation was apparent.

“Performers cheerfully, or mockingly, addressed the crowd as ‘hippies,’ ” writes Jon Pareles. “And the Bonnaroo crowd — about 80,000 people, many camped out on the grounds — is still ready to dance to everything from hip-hop to bluegrass. It’s an untrendy crowd, gathered for a good time.”