Coldplay have revealed Beyoncé totally "transformed" their song 'Hymn For The Weekend' when she lent her vocals to it.

Beyoncé

Beyoncé

The highly-anticipated track features on the band's forthcoming album 'A Head Full of Dreams' - due for release on Friday (04.12.15) - and the guys about the 34-year-old R&B superstar's "understated" vocals gave the track the magic touch it needed.

Speaking about their time in the studio together, Coldplay bassist Guy Berryman revealed: "It was amazing, she came in, she did her thing, she was unbelievably professional. I think she was in and out in five minutes. And yeah, we're just so blessed to have her sing on one of our songs. She really transformed it, and made it into something that we're all incredibly proud of. It's quite understated which I like. She's just fab and she's so sweet and down to earth."

The four-piece group - consisting of Guy, Chris Martin, Will Champion and Jonny Buckland - had initially intended the track would be a party anthem until Beyoncé interpreted it in a different way.

Speaking to DJ Annie Mac on UK station BBC Radio 1, Guy explained: "It started off being quite a different kind of vibe. Chris was wanting to write a sort of party song, and the words were 'drinks on me, drinks on me.'

"We said to him, 'Look: you can't say that, you can't get away with that.' So the whole story of the song changed - then he asked Beyoncé to sing on it and she very kindly said she would."

Beyoncé is one of a handful of star collaborators on the LP, others include Noel Gallagher and Chris ex-wife Gwyneth Paltrow.