I had the privilege to hear "Duck" and Cropper here locally a few years back. They were in town for a project with my friend James Burton. Thought I'd died and gone to Heaven. I still remember every note each of them played I think!
It's all about the FEEL. They feel what they want to play and it comes out!
I didn't get to play with them, although I've played a lot with James on other occasions.
Sorry, the post brought up wonderful memories and got me to reminiscing again.
James of course is unique. He invented a lot of the stuff all the other guys play. He has no ego and never judges anyone; he just loves to play the guitar, whether it's with Elvis or lowly ol' Don Mason.