A Heartbeat and a Guitar: Johnny Cash and the Making of Bitter TearsA Heartbeat and a Guitar tells of the collaboration of two distinct yet connected musiciansiconoclast Johnny Cash and pioneering folk artist Peter La Fargeand the album they created, Bitter Tears: Ballads of the American Indian. It also tells of the unique personal, political, and cultural struggles that informed this album, one that has influenced the likes of Bruce Springsteen and Bob Dylan. D'Ambrosio has interviewed dozens of Cash's and La Farge's