KEITH RICHARDS credits late country star GRAM PARSONS with preventing THE ROLLING STONES infamous Altamont free concert from turning into a bloodbath. A fan was stabbed to death at the 1969 show, but the WILD HORSES guitarist is convinced more lives would have been lost if Parsons, who supported The Stones with his band THE FLYING BURRITO BROTHERS, had not been on stage. He says on new Parsons DVD FALLEN ANGEL, "He had a very commanding presence. He was up there, a very gentle guy with a very soothing effect on people and he knew it. I think he at least stopped some other heads getting broken."