Chris Martin’s duet with Nelly Furtado was left off her new album because it was too rocky.

News first appeared last month that the collaboration would be dropped, but no reasons were given at the time.

Martin's record label apparently deemed that his voice sounded too rocky on 'All Good Things (Come To An End)' and axed it from the final record.

Furtado commented: “Chris’s label didn’t want his voice sounding so rocky, so they said we couldn’t use the song. Now it’s on the album but with just me singing it.”