Last night, Pharrell headlined the third annual Camp Flog Gnaw Carnival, the L.A.-based festival started by Tyler, The Creator; the full line-up included Rick Ross, Mac Miller, Action Bronson, Freddie Gibbs, Vince Staples, Tyler, Earl Sweatshirt, and the rest of the Odd Future crew. Mid-performance, Pharrell brought out Chad Hugo to perform a selection of N.E.R.D. classics in honor of Tyler, whose obsession with the duo has been well-documented. While they performed their 2002 hit "Rock Star," Tyler was seen breaking down into tears in the front row—though he still seems to be rapping along word for word. Watch his reaction above.