Coldplay's Chris surprises singer on London streets, joins in for 'Viva la Vida' duet

Coldplay's frontman Chris Martin surprised singer Hanny Junee by joining him for a duet of Coldplay's track 'Viva La Vida' during a busking session in London's Trafalgar Square. Junee recalled, "I thought, 'Come on...Of course it's not him; Chris Martin doesn't roam streets of London'." Chris left after one verse, and only then did Junee realise it was actually him.