"That's a failure? In Europe, PopMart was seen as an absolutely groundbreaking pop-art milestone. Here, it was seen as a flop. I don't like our musical experiments being seen as indulgent."
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.