Chris Martin joins busker for impromptu duet

Figure caption, Chris Martin surprises Trafalgar Square busker with impromptu duet

Coldplay singer Chris Martin joined a busker in central London for an impromptu duet.

Hanny Junee was getting ready to sing Coldplay's hit Viva la Vida to a small audience in Trafalgar Square when the star joined him by the microphone and started singing along.

But Junee said he did not realise who he was. He told the BBC: "I thought: 'This guy has amazing energy, nice vibe and a really good voice, he sounds really similar to Chris Martin.'

"But I thought: 'Come on, Hanny, don't be ridiculous, of course it's not him, Chris Martin doesn't roam the streets of London.' Then he finished a verse and the next thing I know he's gone. It was magical."

Junee added: "Afterwards some people came up to me and told me it really was Chris Martin.