See more from Britain's Got Talent at http://itv.com/talent Pianist Nicholas Bryant has a surprise up his sleeves during his audition in the form of a flash mob The Collaborative Orchestra and Singers! And, it’s safe to say the Judges were more than impressed by their efforts… SUBSCRIBE: http://bit.ly/BGTsub Facebook: http://www.facebook.com/BGT Twitter: http://twitter.com/BGT