Keith Urban and Little Big Town are the latest artists added to the Stand up to Cancer fundraiser in September in Los Angeles. The country acts will join a roster of A-list celebrities and performers for the fifth biennial televised special on Sept. 9.

Urban, Little Big Town and Celine Dion are set to perform at the event to raise awareness for those battling cancer. Additional acts will be announced in the coming weeks.

In addition to Urban, LBT and Dion, Ben Affleck, Matthew McConaughey, Emma Stone, Anna Kendrick, Josh Gad, Niecy Nash, Eric Stonestreet, Alison Sweeney, Ken Jeong, Marcia Cross, Greg Grunberg, Danielle Campbell, Charlie Wilson, Brittany Daniel and SU2C co-founder Katie Couric will appear throughout the broadcast. Bradley Cooper serves as executive producer of the event.

"We all have a reason to stand up," Cooper says in a press release. "Stand up to Cancer is a sustained movement that impacts millions of lives. We honor the personal stories that motivate individuals to fight, and that highlight the urgent need to get new methods of treatment to the patients who so desperately need them."

The telecast will run on numerous U.S. broadcast networks and several cable channels, and will stream live worldwide via major online services. Leading up to the show, Stand up to Cancer will promote the social media campaign #Reasons2StandUp, which invites supporters to share through photos and video posts how cancer has impacted their lives.

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