The 2012 London Olympics will come to a spectacular close as Olympic Stadium will be transformed into a jukebox of British pop and pizzazz.

Kim Gavin-who directed rock tours and London's 2007 Princess Diana memorial concert-said Saturday that he wants the spectacular to be "the best after-show party that's ever been."

Although organizers have tried to keep the ceremony acts secret, many details have leaked out in the British media -- and some performers have let the cat out of the bag themselves.

The Spice Girls and The Who are among the acts celebrating two weeks of sporting competition with a Sunday finale that artistic director Kim Gavin calls "a mashed-up symphony" of British hits. 

The Who, George Michael, Muse and Ed Sheeran have all said they will take part in a show that will include performances of 30 British hit singles from the past five decades - whittled down by Gavin from a possible 1,000. The Pet Shop Boys, Annie Lennox and Fatboy Slim also will be on hand to get people dancing. 

There will also be speeches by International Olympic Committee President Jacques Rogge and London organizing committee Chief Sebastian Coe, and the extinguishing of the Olympic flame.

To watch the closing ceremony live click here.