Jack Ü (also known as Skrillex and Diplo) is an American DJ duo, side group and collaborative project, consisting of Mad Decent founder Diplo andOWSLA founder Skrillex, formed in 2013. Jack Ü performed at Ultra Music Festival Miami in 2014. They released their first official single "Take Ü There" featuring vocals from Kiesza on September 17, 2014. On February 3, 2015, the trio announced that they would be working with Missy Elliott on a remix to "Take Ü There". They released their debut album Skrillex and Diplo Present Jack Ü on 27 February 2015. Jack Ü also performed at Ultra Music Festival in 2015 with the entire "Jack Ü crew", featuring live contributions from CL, Kai, Diddy, Kiesza, and Justin Bieber.