Gretchen Wilson and Ryan BinghamGretchen Wilson and Ryan Bingham are both happy to report that they got the call from Willie Nelson that all artists dream of getting. The two have been added to Willie's Farm Aid concert lineup, which also features Neil Young, John Mellencamp, Dave Matthews, Jamey Johnson, Wilco, Billy Jo Shaver, Jason Mraz and more. The show takes place Oct. 4 in St. Louis, Mo., with all proceeds going to help struggling American farmers.

"It's not only great to be a part of Farm Aid, it's great to be involved on all levels to help support and spread the message so that future generations can enjoy safe and sustainable food," says Ryan, adding, "Support farmers, not factories!"

Farm Aid has raised $33 million for farmers since its inception in 1985.