FIrst off, this goes so far beyond the bare essence of the words. This is a real lesson in music theory, thank you so much. It brings up a wellspring of ideas:

So, can we get the info from this article into the Jam Charts?! Holy crap.

Can we use this analysis to compare Phish jamming over the years? Will you be able to execute the same analysis for some other concert stretches, like August 93, December 97, 2002, Fall 2013?

What about other metrics, like TEMPO and rhythm? Well you can't ignore the modulations (I can't either, but I don't have good pitch recog skills), I doubt any of us can ignore rhythm and tempo shifts. How often do they intermingle? I assume most jams are in 4/4 or just get too loose to matter. I would learn a lot from that sort of analysis too.

Ultimately, all that data could feed into an index. It would a scientific metric of a jam's quality. Like a point system. It would be freaking cool and I think we could geek out this. Like image if the indexes were added up over the concert and each night could be analyzed and scored. We could place bets and stuff, or we could have like a fantasy game where we pick songs for the tour and ... you know where this is headed, right? We got a good game in the making here!