Farm Aid is an annual benefit show for American family farmers, and you could liken it to an agrarian equivalent to festivals such as the alternative-rock extravaganza Lollapalooza. Along with music on the amphitheater’s main stage, there were farm-related presentations on the plaza. If you were interested in “Sustainable Fishing 101” or “Growing Transitions, from Tobacco to Good Food,” this was the place to be.  Farm Aid 2014, which drew a sold-out crowd of 20,000 to the Walnut Creek Amphitheatre. Farm Aid founder and guiding light Willie Nelson appeared onstage to introduce the Denise Alley Wisdom Dancers to perform an Indian welcome chant (with a uniformed Marine on vocals). Nelson himself followed singing “The Lord’s Prayer,”.  “Y’all ready?” he asked. First up was the Raelyn Nelson Band, a rock quartet fronted by Nelson’s ukulele-playing granddaughter. Each year, Farm Aid board members Willie Nelson, Neil Young, John Mellencamp and Dave Matthews headline a Farm Aid concert to bring together a wide variety of musicians, farmers and fans for one mission: keeping family farmers on their land. Farm Aid is the longest running benefit concert series in America, raising more than $45 million to help family farmers thrive all over the country while inspiring millions of people to learn about the Good Food Movement.