Could Russia's 'singing grannies' win Eurovision?

Organisers are putting the final touches to the Crystal Hall in Azerbaijan's capital, Baku, ahead of the Eurovision song contest on Saturday.

Tens of millions of people are expected to watch it across Europe and beyond, with acts including the UK's Engelbert Humperdinck and Russia's ''singing grannies''.

The BBC's Steve Rosenberg reports from the Azerbaijan capital of Baku.