Neil Young, right, and Crazy Horse with guest Willie Nelson.
Dave Matthews at the press conference.
Willie Nelson laughs before sharing the stage with Neil Young.
Grace Potter
John Mellencamp at the press conference.
Willie Nelson earlier in the day.
Dave Matthews speaks at the press conference.
Jamie Johnson performs.
Willie Nelson introduces Jack Johnson onto the stage.
Willie Nelson.
Andy York, left, John Mellencamp, and Mike Wanchic perform.
Grace Potter rocks in out on stage.
Willie Nelson welcomes the crowd to Farm Aid.
The guitar of Jamie Johnson.
Willie Nelson performs near the end of the show.
Jack Johnson entertains the crowd.
Dave Matthews performs "Funny the Way It Is."
John Mellencamp.
Tim Reynolds, left, and Dave Matthews perform.
Jack Johnson.
Dave Matthews belts out a tune.
Violinist Miriam Sturm performs with John Mellencamp.
Pegi Young, wife of Neil Young, performs earlier in the day.
Kenny Chesney hits a high note during his performance.
Another shot of Dave Matthews performing.
Kenny Greenberg strikes a note while playing with Kenny Chesney.
Kenny Chesney.
Tim Reynolds performs with Dave Matthews.
