Lighting designer Cory Fitzgerald explains how Bieber elevated his arena tour for his most mature album yet.
It took a couple tries, he tells EW.
It gets everything wet, lets put it that way.

Credit: Jeff Kravitz/FilmMagic
Lighting that box was basically just about isolating him for the beginning, Fitzgerald explains.
Its a really sort of minimalist idea.
ThePurposetour kicked off March 9 in Seattle and concludes Nov. 29 in London.
See the list of upcoming tour dateshere, and read EWs dispatch from the tour openerhere.