Willie Nelson's Farm Aid, the longest running concert for a cause, will mark the 40th anniversary of its advocacy for family farmers with an all-star festival on Sept. 20 at Huntington Bank Stadium in Minneapolis.

John Mellencamp, Dave Matthews, Waxahatchee, Margo Price, and Billy Strings will also play the annual charity concert.

Farm Aid, the music and food festival launched by Willie Nelson, Neil Young, and John Mellencamp, will be held in Minneapolis for the first time in its 40-year history. It was confirmed on Tuesday that the 40th anniversary of Farm Aid will take place at the home of the Gophers, Huntington Bank Stadium, on Saturday, Sept. 20.