Booth and Brennan hide out in the woods and observe a Wiccan ritual during this scene from Bones. It's courtesy of the episode "The Witch in the Wardrobe."
During the 4/29/10 episode of Bones, titled "The Rocker in the Rinse Cycle," the duo gets on stage and rocks out. Here, they are just taking in the scene.
Booth and Brennan investigate a murder at a rock and roll fantasy camp during "The Rocker in the Rinse Cycle." Booth is excited about the mission, as you can see.