Over the weekend, the superduo of Jack U filled in for the absence of Sam Smith at Hangout Music Festival in Alabama. While at the festival, Skrillex and Diplo were interviewed by Sway Calloway for MTV, who asked them about their popular collaboration with Justin Bieber, "Where Are U Now."

Sway adds that people are calling the collaboration "the song of the summer," before asking how the rare collaboration came about. “With us, there couldn’t have been a more unexpected, weirder idea than just to do a song with Justin Bieber,” said Diplo. Skrillex also talks about how they met with Bieber in the first place, saying, "We met him at a club randomly. If there’s good chemistry and the vibe is alright, you can’t be afraid to try anything with anybody.” Skrillex also gives Justin Bieber and his team a shout out for trusting Jack U with the track. You can watch their interview with Sway below.

Also, check out Jack U's set from the Hangout Music Festival above. The festival also included a solo performance from Skrillex, a set from Major Lazer, and a variety of other dance music acts, including Adventure ClubGramatikSNBRN, Beats AntiqueKrewellaGRiZRobert Delong. Jack U brought nearly two hours of the turnt up tunes they've become known for. Also, catch Jack U as they headline events like Spring Awakening Music Festival in Chicago, Canada's Full Flex Express Tour and various dates along the Mad Decent Block Party.

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