One Direction and 'The Voice' winner Cassadee Pope to perform on 'America's Got Talent' Aug. 28

Both to appear on hour-long live results telecast as competition among acts becomes more intense

Global superstars One Direction will perform "Best Song Ever," the single from their highly anticipated new movie "One Direction: This Is Us," on NBC's "America's Got Talent" results show Wednesday, Aug. 28 (9 p.m.). "The Voice" winner and chart-topping singer Cassadee Pope will also perform on the live telecast.

On "Best Song Ever," Niall, Louis, Harry, Liam and Zayn deliver a modern-pop classic. The music video delivered a record breaking 12.3 million views across VEVO in the 24 hours following its premiere. With two albums to date - "Up All Night" and "Take Me Home" - One Direction have sold more than 30 million records worldwide. Their third album is due out later this year. They've won two BRIT Awards, three MTV Video Music Awards and three Billboard Music Awards.

Pope's soaring vocals and edgy performances stole the national spotlight when she won season three of NBC's "The Voice" and dominated the top spot on the iTunes all-genre chart with three of her performances. Since then, the petite powerhouse has ascended to the No. 1 spot on the iTunes country singles chart with "Wasting All These Tears," the first single from her debut album "Frame By Frame," releasing Oct. 8 on Republic Nashville.

Pope will also share an inside look at life since "The Voice" in a yet-to-be-titled docuseries that premieres on CMT on Oct. 4 (9 p.m.). CMT will feature Pope as one of its "Next Women of Country" as she graces Nashville Lifestyles' August "Hot List" cover. Currently, Pope is opening for Rascal Flatts' "Live & Loud" Tour.

"America's Got Talent" kicks off the first semifinal performance show on Tuesday, Aug. 27 (9 p.m.), where 12 of the top 24 acts will perform for America's vote. Six of those acts will move on to the Top 12.

Now in its eighth season, "America's Got Talent" stars celebrity judges Howie Mandel, Mel B, Heidi Klum and Howard Stern.

For more on "AGT," visit NBC.com's official show site at www.nbc.com/americasgottalent/. Fans can like "AGT" on Facebook www.facebook.com/nbcagt and follow it on Twitter at http://twitter.com/nbcagt or by using hashtag #AGT. For information on open call and online auditions for season nine of "America's Got Talent," visit www.americasgottalentauditions.com/.