Ella Henderson teamed up with OneRepublic frontman Ryan Tedder for her debut single Ghost, recorded on the eve of her 18th birthday. Here, the singer shares the story behind one of the biggest UK hits of the decade...

When I signed with Syco I was 16 and I was given the opportunity to state if there was anyone in the industry I would like to work with.

I cultivated a shortlist and Ryan Tedder was one of the names on ...