His key appearances include performing at the opening ceremony of the 2002 Winter Paralympics in Salt Lake City , the 2005 Live 8 concert in Philadelphia , the pre-game show for Super Bowl XL in 2006 , the Obama Inaugural Celebration in 2009 , and the opening ceremony of the 2011 Special Olympics World Summer Games in Athens , Greece .
On June 25 , 2011 , Wonder performed at the opening ceremony of the 2011 Special Olympics World Summer Games in Athens , Greece .