Home Uncategorized Skrillex & Diplo (JACK U) at Ultra Music Festival 2014 4 years ago 4 years ago Uncategorized Skrillex & Diplo (JACK U) at Ultra Music Festival 2014 by Bob 4 years ago4 years ago 0 Diplo and Skrillex brought their collaborative project Jack U to Ultra Music Festival in Miami Sunday, debuting new tracks and a wicked set. Like it? Share with your friends! 0 Posted by Bob Bob finds stuff, reads stuff, laughs at stuff and then hopes you do the same. He is like a digital dog playing digital fetch for you, only better.