I came across this last night and was very impressed. Some very good flat picking, good vocal harmonies, and some decent Delta harp at the end. I think Walsh, Frey & Henley would approve.
I really like the riff at 2:03. Shades of Chuck Berry in there. But I agree with geordie. I think what I like most overall is the kid on lead vocal's voice. Close your eyes and he'd make you think you were listening to an old blues vinyl from the Delta days.
I've been watching Josh & his friends videos for a couple of years now. This is a fun one, but not the best example of his work. Seems there no stringed instrument he can't play and I guess if he put the time into the harp he'd be mopping the floor with most of us.
Here's another that I particularly like (but check out more, it's worth the time):
