Swedish songwriter shares secrets to perfect pop

Ask anyone about Swedish music, and most people will still think of Abba.

But behind the scenes Swedish songwriters have also been incredibly prolific worldwide - names such as Max Martin, RedOne and Shellback have churned out a string of huge hits.

Per capita Sweden exports more music than any other country in the world.

Jorgen Elofsson has written for artists such as Westlife, Britney Spears and Kelly Clarkson, and has penned eight UK and two US Number Ones.

Chris Morris met him at his studio in Stockholm to find out why Swedish music is such a global success.