Willie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose RiotWillie Nelson, 81, plays a beaten-up guitar Saturday at Chastain Park Amphitheatre. Photo by Rose Riot