Before the 20, 000-cast event kicks off on 27 July at 21:00 BST, with thetolling of thebell, an Olympic Stadium packed with 80, 000 spectators will be entertained by a pre-show that will start at 12 minutes past eight - 20:12 BST.
After a moment of silence, led by Mayor Michael Bloomberg, and thetolling of a bell, family members and friends began reading the names of the 2, 603 victims who died at the World Trade Center.