It wasn't just busking on Grafton Street that Sir Bono kept himself busy with over the festive period - the U2 frontman also gave a rare radio interview to occasional cohort Amanda Brunker over Christmas.

During the interview, Bono told Brunker that plans for the next U2 album were already well underway. "They're mad for it at the moment and really want to make a new record", he said, speaking of his bandmates . "And they don't care if it takes 10 years, they just want to get it right."

"Within the band we've been calling it 10 Reasons To Exist but I will tell you we might have at least six of them."

The eventual album will be the band's thirteenth record and their first since 2009's No Line On The Horizon.

You can listen to the full interview here.