"The God Song" by Randy Newman - but as sung by the incomparable Etta James. RN's version is very understated - throwing his utterly chilling words into relief; but EJ's simply blows the lid off you (and she has the voice to carry it off). As far as I can remember, it's on the same album as another Newman gem, "Sail Away", also a powerhouse. But then, Etta could sock it to you with Twinkle Twinkle Little Star (you'd never look at outer space in the same way again).