How U2's technology is changing concerts for the better

"The two things you can't have up here are vertigo and a need for stability."

U2 bassist Adam Clayton is giving me a tour of "the barricage", a 29-metre long, double-sided LCD screen that the band climb inside of every night of their Experience and Innocence tour.

The walkway spans the entire length of Amsterdam's Ziggo Dome, linking the main stage and a smaller, circular platform at the far end of the arena.

"It's a very expensive way of getting from the big stage to this little one down here," laughs Clayton.

But it's much more than that. The screens rise and fall throughout the show, transmitting live footage, political slogans and colourful animations.

They can also go transparent at the flick of a switch, allowing U2 to appear and disappear behind the wall and even tussle with the images around them.

"The magic act, if there is one, is to shrink the venue and make it disappear," says Bono, who barrels around the 89-ton structure every night with a perilous disregard for his own safety.

"When you get an intimacy with a crowd of 20,000, it's a very moving thing."

https://www.bbc.com/news/entertainment-arts-45864368

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