After the Brit. girls win a cycling gold, Sir Paul conducts the 8000 strong crowd at the Olympic velodrome in the round of 'Hey Jude' that belts from the sound system. Stella McCartney looks suitably embarrassed.
Great impromptu reaction by the sound man though, who must have spotted Paul in the audience.
Great impromptu reaction by the sound man though, who must have spotted Paul in the audience.
