Bono 'knocked out' by U2 popularity on iTunes
Bono said he was "knocked out" that so many people had listened to U2's latest album after the band's giveaway gamble on iTunes.
A survey by Kantar Group claimed the band was the most popular among Apple users, with 23pc listening to at least one U2 song in January 2015.
'Songs of Innocence' was added automatically to iTunes digital libraries last September.
This caused controversy at first, as some Apple users argued that they didn't want the band's latest offering.
But it appears the gamble has paid off.
Bono said: "If these figures suggest that these songs still matter to people, then we're knocked out. That's all any songwriter wants."
Guitarist The Edge added: "It's nice to know that five months on so many people have discovered 'Songs of Innocence'. In the end we just wanted people to hear the album."