Yes, Etta James is very much associated with the song and it's a great version. My personal favourite was sung by Christine Perfect (later McVie), who recorded it with Chicken Shack in the sixties. She quite deliberately took all of the emotion out of her voice and tried to make it sound neutral - which is exactly the way you try to talk when your life has been shattered by something. Not everyone's taste perhaps, but I found it spine chilling.