Sam Smith has collaborated with ''unbelievable'' John Legend. The 22-year-old singer has re-recorded his hit single 'Lay Me Down' with the musician - which is being released to raise money for British charity Comic Relief - and will perform the track with the 'All Of Me' hitmaker at the London Palladium on Friday (13.03.15) for the Red Nose Day telethon.
Speaking about working with the musician, he told BBC Radio 1's Nick Grimshaw: ''He's unbelievable, he's such a pro. We've been in contact for almost a year by email but I'd never met him and finally I got to meet him and he was so cool. I've never seen someone so professional in the studio like that, it was amazing.''