When you run one of the most popular audition-based television shows in the world, you figure nothing will surprise you anymore. But the judges of "Britain's Got Talent" never suspected much from quiet Nicholas Bryant, a pianist who took to the stage alone. But quickly things changed: a flash performance mob seated all over—in the balcony, on the stage, in the pit—joined in on making music with strings, brass, and voice. The judges couldn't believe this surround-sound surprise!