Helen Boast, Redferns / Getty Images
The surprise guests, which were not supposed to be announced, each have connections to the stars of the gig. Usher has previously collaborated with will.i.am on the international smash 'O.M.G.,' while the frizzy-haired guitarist laid down a track dubbed 'Beautiful Dangerous' last year with Fergie. This marks the first time that either artist has appeared during the prestigious Super Bowl halftime show.
The Black Eyed Peas previously announced that they would be keeping it clean during the performance, excluding 'My Humps' from their megamix. Fans can expect the quartet to perform 'I Gotta Feeling' during the show, set to air halfway through the Green Bay Packers vs. Pittsburgh Steelers game on Sunday beginning at 6:30PM.
Watch Usher's 'O.M.G.' feat. will.i.am
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