UNIVERSAL CITY, Calif., Sept. 14 (UPI) -- NBC said it has booked Susan Boyle, Shakira, Leona Lewis and Rascal Flatts to perform on the season finale of "America's Got Talent."
The episode of the TV talent show is to air Wednesday.
The winning act is to be announced at the end of the finale.
The grand prize is $1 million prize and a headlining show in Las Vegas.
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