The Vamps have admitted that having Demi Lovato on their next single was an unexpected turn of events.

The British band recently confirmed that they will releasing a new version of 'Somebody to You' featuring Lovato as their next track.

Speaking to Digital Spy, Connor Ball said that the duet came about after the former X Factor judge was working in a nearby studio in the US.

The bassist said: "We were working in LA with the same producers and she was literally just next door in the studio the same time as us. We were brainstorming for a feature and Demi came up, and then she tracked it the next day."

Bandmate Tristan Evans added: "It's weird. We weren't expecting it. It's Demi Lovato! I bought her album when it came out and now she's on our track."

A normal version of 'Somebody to You' meanwhile features on The Vamps' debut 2014 album 'Meet The Vamps'.

Listen to the single below: