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Carrie Underwood to perform during Emmy Awards tribute

Six-time Grammy winner Carrie Underwood and actor Don Cheadle are set to appear at this weekend's Emmy Awards in a special segment marking the 50th anniversary of two key moments in TV history.

Cheadle, a six-time Emmy nominee, will present a tribute honoring television's impact on the coverage of President John F. Kennedy's assassination in Dallas, Texas, on Nov. 22, 1963. The segment will link Kennedy's death to another memorable event which took place just 80 days later -- the Beatles' debut appearance on "The Ed Sullivan Show" on Feb. 9, 1964. Both moments are considered TV milestones.

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Underwood will pay tribute to music from that era with a special performance following Cheadle's presentation.

"To have an opportunity to look back at a time that represented television's finest hour in a program that celebrates so many of this year's achievements is what makes the Emmys special," executive producer Ken Ehrlich said in an Emmys press release. "We are certain that viewers will enjoy this special tribute."

In addition to presenting the segment, Cheadle might also go home with an Emmy statuette. He's nominated in the lead actor in a comedy category for his role on Showtime's "House of Lies":

Awards show favorite Neil Patrick Harris is hosting the telecast, which airs live Sunday, Sept. 22, on CBS.

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