I love Rock'n'Roll Ruby, Blue Moon of Kentucky, Let's Play House and That's Alright Mama etc. - so, really, why not?
He had Joe Brown sing A Picture of You three times in London and did the backing vocals. Further he played Darling Corey on the Rock Island Line for Lonnie Donegan in 2004...
- so why not cover a great song of his choice without a special guest!?

Let us know songs you think about; that would be interesting. ;-)