Bono: U2 on verge of irrelevance
Bono has claimed U2 are "on the verge of irrelevance".
The rock star spoke to BBC Radio 1's Zane Lowe about recording a new album, the band's 13th since they formed in 1976.
Bono, 53, said: "We're on the verge of irrelevance. You have to make stuff relevant to you and where you're at, make an honest account of what you're going through. If that's relevant to other people, great. But we don't know."
The singer-songwriter revealed the band are recording in "some dank basement".
Bono went on: "Where I'm calling from, as we speak, there were mice spotted earlier. We call it the Oil Rig. Why is it that we always end up hanging out with men in overalls? You start a band when you're 17 and then you get a crew if you're lucky and they're all in overalls and then you go to the studio and there's more people in overalls. Not enough girls. Please, girls out there, start twiddling those knobs."
And he revealed U2 would like to do an arena tour when they next go on the road.
He said: "We love those big outdoors shows - we've had some of the best nights of our lives [playing those]. For this album, we're going to start indoors. We'd like to play the O2. Sometimes it's nice to play intimate things like that."
Meanwhile, U2's free giveaway of their new track Invisible has raised almost £2 million to tackle world health problems after they made it available for fans to download free of charge for 36 hours, with a contribution being made by the Bank of America each time it was accessed.
The song was downloaded 3.13 million times during the period which raised £1.9 million for the (Red) organisation which was founded by Bono. The money is being paid to the Global Fund To Fight Aids, TB And Malaria.
Invisible, produced by Danger Mouse, is now on sale with all proceeds from the 99p download fee going to the Global Fund.
A video for the song is to be released later this week, and a minute-long segment was screened during the Super Bowl at the weekend, prompting more than a million people to download the track within an hour.