Kacey Musgraves, Jack Johnson and Amos Lee have been confirmed to perform at Farm Aid 2013 on Sept. 21 in Saratoga Springs, N.Y. Farm Aid board members Willie Nelson, John Mellencamp, Neil Young and Dave Matthews will host the event at the Saratoga Performing Arts Center with other performances by Toad the Wet Sprocket, Lukas Nelson & Promise of the Real, Bahamas, JD & the Straight Shot, Carlene Carter and Pegi Young & the Survivors. Matthews will perform with guitarist Tim Reynolds. Farm Aid's mission is to build a vibrant, family farm-centered system of agriculture in America. Tickets to this year's fundraiser go on sale Friday (June 28) at 10 a.m. ET via Ticketmaster.