McCartney 3,2,1

I'd been hearing lots about the new Hulu documentary "McCartney 3,2,1". The premise is simple. Acclaimed producer Rick Rubin sits down with Sir Paul, surrounded by a mixing desk loaded with Beatle songs (and a few Wings chestnuts), along with a piano and a line up of guitars. And they just chat the way 2 guys who love music are wont to do. The setting i…