Yet Another Juke Question

["Bob McGraw" <rmcgraw@xxxxxxxxxxxx>]

Was Juke improvised or "arranged?" I've got a LW CD with an alternate take
of Juke that is very different;this might suggest that the Juke we know was
improvised,or it could it be that it was more-or-less an arrangement that LW
had worked out on the bandstand while playing the tune with Muddy's
group,and the alternate take was the improvisation?[if that makes
sense]Maybe Scott Dirks would be kind enough to weigh in on this if he's
still on the list?Otherwise,opinions?
WVa Bob