What's better than a Flash Mob singing the "Hallelujah" Chorus?

A Flash Mob singing the "Hallelujah" Chorus accompanied by the largest pipe organ in the world, Philadelphia's Wanamaker Organ with its almost 30,000 pipes.



Although I have to confess to a greater fondness for "Worthy Is The Lamb", which would be awesome accompanied by the Wanamaker Organ.