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2012 Olympic Games - Closing Ceremony

NOW: Roger Daltrey (L) and Pete Townshend of The Who perform during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Closing Ceremony performers: Then and now

Check out the Olympic musical performers in their early years and now performing at the Closing Ceremony. -- Tiara Chiaramonte, Yahoo! Sports