'81 and '71 are fiery-fingered and bubbling with creativity compared to all the other examples, imho. That's the stuff. The vid creator got a couple of the pics misdated, as far as illustrating the year: "1977" is one from 76 (w/the TB-1000A), and "1985" is clearly post-coma, '87 or '88 Jerry. Kind of a fun idea to hear the progression of a particular structured solo, through the years.
"There, in huge black letters, was 'The Grateful Dead'. It just... cancelled my mind out."-Garcia