Swede sound of success
Swede Martin Karl Sandberg has recouped more than most in royalties over the past 10 years.
He may be able to walk unrecognised on the street, but his songs have soundtracked the global pop landscape.
From N*Sync to Backstreet Boys and Pink to Kelly Clarkson, Sandberg -- or Max Martin, as he is known in the industry -- has written for them all and recouped millions in single and album sales and live performances.
The royalties started pouring in when he penned 'Baby One More Time' for a 16-year-old Britney Spears and the cheques won't be stopping any time soon: he was responsible for two of 2010's biggest hits -- Katy Perry's 'California Girls' and 'Teenage Dream'.