From left, musicians Dave Matthews, Neil Young, John Mellencamp, and Willie Nelson applaud a farmer during a news conference held before the Farm Aid concert at Walnut Creek Amphitheater in Raleigh, N.C. on Saturday, Sept. 13, 2014. They are slated to perform later in the evening in the benefit concert featuring over a dozen artists. (AP Photo/The News & Observer, Chris Seward)
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