Willie Nelson, Neil Young, John Mellencamp and Dave Matthews will host the annual Farm Aid concert on Sept. 22 in Hershey, Pa. The lineup will also feature Jack Johnson, ALO, Pegi Young and the Survivors, and Lukas Nelson and Promise of the Real. The first Farm Aid concert was held in 1985. Since then the organization has raised more than $40 million for family farmers. Tickets for this year's show go on sale Friday (July 13). The Farm Aid concert will return to Pennsylvania for the first time since 2002, when it was staged in Burgettstown, near Pittsburgh.