This year, Coachella continued its long tradition of unannounced A-List collaborations: Beyoncé and Solange; Jay Z and Nas; Pharrell and everybody. And the surprises kept coming today, as everyone's favorite Canadian teen pop star swung by to play hype man for Chance the Rapper. The Biebs showed up at the end of the Chicago MC's set to perform their collaboration, "Confident," and to bust a few moves, all while channeling peak LL Cool J in a white bucket hat. We can't wait for next weekend, when One Direction will perform alongside a hologram of Grumpy Cat. Anything is possible, people!