Hours after being awarded the French Legion of Honour in Paris by French President Francois Hollande, Sir Paul McCartney made a surprise appearance at the closing Africa Express event in London on Sept. 8 to share the stage with an already stellar line-up. But even backstage special moments were made – as we quietly stumbled across the Beatles legend getting into an impromptu jam session with Shingai Shoniwa [of UK band the Noisettes] and emerging US violinist/singer/producer Marques Toliver.