"We were laying the song down in the studio, and the Edge just cut loose a riff that could only be described as classic, early-days U2," he says, contorting his voice to imitate the riff. "It was a sucker-punch -- a truly brilliant moment that made everyone's hairs stand on end. But I froze and said, 'Oh, no, we can't use that. It sounds too much like a quintessential U2 riff.'"
In that instant the Edge shot a glare from across the room that spoke volumes. "It said, 'Fuck off, we are U2, and this is how I play guitar.' And I got it. I understood that it was time for us to reclaim who we are. It set the tone of the album."