Bono: 'U2 album was too challenging'

Bono has admitted that he is disappointed with the lack of success for U2's recent album.

No Line On The Horizon was a number one album, but single 'Get On Your Boots' peaked at number 12 in the single charts and 'I'll Go Crazy If I Don't Go Crazy Tonight' only reached number 32.

According to The Mirror, Bono is unhappy that the band didn't "pull off the pop songs".

He explained: "We weren't really in that mindset and we felt that the album was kind of an almost extinct species, and we should approach it in totality and create a mood and a feeling, and a beginning, middle and end."

The frontman added that the record might have been too complex for fans.

"I suppose we've made a work that is a bit challenging for people who have grown up on a diet of popstars," he said.