New York's Central Park, the site of countless iconic concerts, will once again aim for the history books on September 29 when fans fill the lawn for the Global Citizen Festival. Headlined by the Black Keys, Foo Fighters, Neil Young & Crazy Horse, Band of Horses and K'Naan, the show aims to be the biggest syndicated music charity webcast and broadcast ever.

Among the many partners planning to broadcast the show focused on spurring action to end extreme poverty are: Palladia (like MTV, a division of Viacom Inc.), as well as VH1.com, NYTimes.com and YouTube. The first-of-its-kind collaboration between global online and broadcast outlets will include full performances and remarks from the speakers on tap to attend.

In addition to host Katie Couric, the host committee for the festival includes actresses Olivia Wilde (on behalf of the Half the Sky movement), Sophia Bush (Pencils of Promise) and Minka Kelly (World Food Program), singers Selena Gomez (U.S. Fund for UNICEF) and Katharine McPhee (Malaria No More), as well as economist Jeffrey Sachs, Twitter co-creator Jack Dorsey and model Erin Hetherton.

"The Global Poverty Project is proud to have such partners to help carry the message of the Global Citizen Festival around the world," said Hugh Evans, CEO and Co-Founder of GPP in a statement. "This is a chance to take action towards ending extreme poverty in our generation."

The Festival, in partnership with ten nonprofit organizations, has been timed to celebrate achievements and create awareness around the UN General Assembly in New York, when world leaders will convene to debate the Millennium Development Goals and make commitments to end extreme poverty.

The broadcast will air live on Palladia September 29 beginning at 4:30 p.m. ET as well as live stream on MTV.com and VH1.com. For users who missed the live digital stream, it will then repeat at 12 a.m. and 8 a.m. ET.