BBC Documentary hunts for Prince's vault

The BBC's Mobeen Azhar travels to Minneapolis to meet with Prince's sound engineer, former band mates and friends to talk about the musicians prolific songwriting abilities — and to try and discover what's really inside the fabled vault of this local legend.

Listen: Hunting for Prince's vault

Prince has become synonymous with the Minneapolis music scene — and he's dominated the funk, jazz and rock circuits for decades with hits like 'Purple Rain' and 'Little Red Corvette.'

But for every Prince song you know there may be hundreds — or even thousands — more unreleased tracks, stored in a giant vault at his Paisley Park recording studio.