"I'm not sure that we'll ever be number 1 on the pop charts [again], but we need songs that go outside of our audience."
- Bono, 2011
did you know
During the ZooTV Tour U2 introduced a new stage concept called the B-stage. It allows for more intimate and stripped-down performances of songs, later used by Aerosmith, Bon Jovi and Coldplay amongst others.