The pair blast through 'Superstition' for a good cause...

CHRIS MARTIN has joined STEVIE WONDER onstage in America.

The Coldplay singer was the surprise guest at New York’s Jacob Javits Centre, where Wonder was playing to raise funds for local charity Robin Hood.

Martin and Wondersang ’Superstition’ together.

Robin Hood works to target poverty in New York. Coldplay have a strong association with them, as two years ago the charity auctioned the opportunity to join the band onstage at the Madison Square Garden, raising $500,000.