With their new album Songs of Experience due out in 2016, U2 have compared the recording of the LP to how they worked on 1993's Achtung Baby follow-up, Zooropa.
In an interview with UK music magazine Q, guitarist The Edge said there were similarities in how both Zooropa and the new album were recorded while U2 were taking breaks from touring.
He said that the band's producer, Brian Eno, "would love to see us making albums a bit more like that. Where we go, 'You know what? We're not going to second-guess any of this. Let's just go for it'.
"I think there's a quality you get when there’s a certain momentum to the process," he added.

Bono - "There is a reason why all the great groups made their best albums while in and around touring" Photo: Danny North
Singer Bono said that his bike accident in November 2014 and the subsequent delay to their plans had actually turned out to be beneficial when working on the follow-up to Songs of Innocence.
"The gift of it was that I had time to write while in the mentality that you get to at the end of an album," he told Q. "There is a reason why all the great groups made their best albums while in and around touring, because the ideas have to come out of your head."