Ever since Jack U premiered their hit single, "Where Are U Now" with Justin Bieber, the track featured on their collaborative album Skrillex and Diplo Present Jack U has become one of the biggest hits, not just in the EDM world, but the mainstream world as well. On Sunday, August 2, Diplo and Skrillex headlined the second day of the 2015 HARD Summer in Fairplex, Southern California. As they have done for special select performances, they invited the pop star on stage to perform their hit collaboration. Now, they haver released the aftermovie directed by Adam Villasenor and Reza Ghassem recapping the performance. Check out the video above.