"Right now we're going to do something we've never done before," said Bono. "There's a bunch of people that have been on the road since we started this tour. I have no idea how they're paying for it. I have no idea how they've skipped school and work, husbands and wives. But they've been on the road and they've been asking for one song, so we kinda nearly figured it out. We'll tell you about it before we play it. It's called 'The Crystal Ballroom.'

"The Crystal Ballroom was a punk club we used to play that was called McGonagle's in East Dublin," he continued. "But historically it's called the Crystal Ballroom. That's where, historically, my mother and father used to go. I thought it was a bit weird we ended up at a punk club where my mother and father used to make out. Something just a little funky about that, in a good way."