I’ve never found a track specifically for this. I guess you want to record it or use it for busking or such? As far as practice goes, this would be one of my most-played things. Usually when I pick up a harp it’s the first thing that comes to mind. I don’t know how many years since I started playing that intro. Occasionally I have a close listen to the record and try playing note for note. The Boz Skaggs record from 2009(?) was pretty good to play along to, as well.
J Bird, I have not listened to Jim Liban's version. He is one player i have not heard much but I hear much respect for his work. Thanks for sharing that link. G is not too bad i guess. The Boz track is in B, which is not bad for my voice. I think it is Harry Duncan on the harp.