Bono has been talking to NME.com about teething difficulties at the start of U2's Vertigo world tour. The tour began last week, a month late, the original first date was delayed due to a family illness.
Bono admitted that the band had a hard time preparing for the tour.
Following that first appearance he said: "It's still a strange feeling. We were sick with the rehearsals for this tour.
We weren't getting lift-off. If you'd seen the rehearsal show, you wouldn't believe we would get to San Diego."
Bono also explained why the set list for Vertigo included songs from debut album 'Boy', saying "there is a strong link between those songs and the new album. The first was an ode to innocence and the new one is innocence regained. The first album is becoming a bit of a cult classic for bands like The Killers who talk about it. We thought it was time."
The world tour will reach the UK in June. Speaking about the ongoing development of the show, he said: "We'll stick with it the way it is for the next few shows. We have other material to get working on. A few surprises to bring as the tour gets on. We tried a few things (on the first night) that didn't always work.. You know, I wasn't sure what we were before, if we were still a rock band. But when I was whacking the tambourine on
'All Because Of You', it felt like an old song, like we were back, like we were a rock band again. At times it was a political rally, at time it was a gospel tent, at times it was a Las Vegas show."