The 2013 Farm Aid is set to take place on September 21st in Saratoga, New York. It will feature Willie Nelson, Neil Young and John Mellencamp, along with Dave Matthews. The remainder of the lineup will be announced soon. Tickets go on sale on June 28th.
Speaking of John Mellencamp, here's the video for his 1986 rock 'n roll tribute song R.O.C.K. in the USA from iHeartRadio: