U2 in Sydney 23/11/19

"This was an idea that Bono had about two years ago. He heard about this thing called the Sphere being built in Las Vegas and he said I think we should follow the development of this idea because I think it's really new. And what it is is it's a custom built venue. It's not primarily for music. I think it's multipurpose but it has it has a sound system in it so the sound is really good for the band." - Adam on playing U2:UV in Vegas, November 2023