Reliable Source: Hints about 'the special guest' at the Sting and Paul Simon fundraising concert

Mum's been the word on the 'extra famous guest' scheduled to make an appearance alongside Paul Simon and Sting at next week's concert for the Duke Ellington School for the Arts. The folks behind the March 12th fundraiser call him "shhhhh" but his fans know him as Stevie Wonder--at least that's what we've been hearing. The "Songs in the Key of Life" crooner headlined the school's 2010 concert.