Sharon Jones, the amazing soul-funk diva whose groovy version of Woody Guthrie's "This Land is Your Land" recently changed my life, performed with her band, The Dap Kings, in a free concert at Williamsburg Park in Brooklyn, NY on Saturday night.The singer, who is in her 50s, has tremendous energy and a performance style that brings James Brown and Michael Jackson to mind. Thousands turned out to experience the perfor…