Not one to revel in the excesses of the industry, Diplo says he tries to look as far ahead as possible. He understands the success of 'Lean On' from a mainstream perspective, and knows that his success isn't going to last forever. "I'm lucky that I make what I do, but I have children and I'm growing more motivated to stay at home and hang out with them. And Diplo's favourite Major Lazer song – the haunting collaboration with Amber Coffman of Dirty Projectors on second album 'Free The Universe' – points to Major Lazer thriving in a post-EDM world. "'Get Free' is my favourite song we ever worked on. I hope more people hear it because of 'Lean On'."

The chants of "Major! La-zer!" get louder as set time nears. In the backstage area, Diplo and Walshy fire through a series of sit-ups and ab exercises before a meet-and-greet with local fans and press.

Following their usual pre-gig huddle, it's go time. Treating the show like a carnival – Diplo fires T-shirts, confetti and other assortments into the crowd – the show is one of the best of the tour. Despite opening up a gash on his foot from surfing in San Diego earlier in the week, Walshy hops up and down on stage showing no signs of being injured. When's he not manning the decks, Diplo jumps around hyping the crowd, and at one point, glides through them in his trademark inflatable ball. The LED screens and a mesmerising light show only add to the shock and awe. For 90 minutes in Phoenix, Major Lazer are on top of the world. They hold the sold-out, 12,000-strong crowd in the palm of their hand, bringing the night to a crescendo with 'Lean On'.