After the dual spectacle of Wonder and Jay-Z Friday evening, I did a few slow laps around Centeroo, marveling that the last day of Bonnaroo 2010 had arrived – and that most people just didn't know it yet. Easing by each music tent, I circled, impaling my brain on a sort of late night "sensory spit." Dan Deacon's slapdash, noisy barrage of sounds is incredibly jarring in the live setting. The exploratory fascination of his last album, Bromst, was challenging, but not nearly as challenging as watching his band attempt an approximation of the sound live. It's the kind of music that can give you a skin condition after prolonged exposure.