Piers Morgan, Sharon Osbourne & Nick Cannon: Why Didn't Susan Boyle Perform On 'AGT'?

Do Piers Morgan, Sharon Osbourne and Nick Cannon know why Susan Boyle didn't sing on "America's Got Talent"? Also, the Final 4 have been chosen for "AGT," but who do they think will take home the win? "AGT" airs Tuesdays & Wednesday s at 9 PM on NBC.

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