"It's never been done, oddly enough. Two bands like this, two bands having a baby and we're not the chick."
- Bono, 2006, on the duet with Green Day
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.