Hallelujah! It s Côr Glanaethwy | Grand Final | Britain s Got Talent 2015

See more from Britain s Got Talent at http://itv.com/talent The 165-piece Welsh choir brought the house down with their rousing semi-final performance. Could their magnificent rendition of hallelujah bring home a win to the valleys? SUBSCRIBE: http://bit.ly/BGTsub Facebook: http://www.facebook.com/BGT Twitter: http://twitter.com/BGT