Yes the song rocks, Elvis was probably familiar with Roy Hamilton's version.
This video shows picture/video from '77, but has been composed in style. The recording is actually from 1974. I wish Elvis had done it more often, it worked out fine!
[ame="http://www.youtube.com/watch?v=Sjs7CseuS0s"]YouTube - ELVIS PRESLEY THE VERY RARE YOU CAN HAVE HER LIVE THE 2009 CONCERT[/ame]
It's a decent audience recording from May the 11th 1974. I'm not quite sure which show, evening or afternoon?