A little clarification on the note above, as it's causing some problems for folks - for one of these clips, there's a discrepancy in how LivePhish, Phish.in, and Phish.net denote the section of interest.

LivePhish.com presents the setlist as Song A -> Song C, and if you're searching for the section there, you'll find it near the end of Song A.
Phish.in presents the setlist as Song A -> Song C also, and if you're searching for the section there, you'll find it near the beginning of Song C.
Phish.net presents the setlist as Song A -> Song B -> Song C, and the setlist implies that the relevant section falls at the end of Song B.

Songs A, B, and C are regular song titles - we aren't dealing with a "Fukuoka Jam," or a "Plasma Reprise," or a "Jam", etc. It's just a somewhat subjective call as to which song is being played in the middle of an improvisational segment. Think 12/29/18's "Wolfman's Brother" (-> "Party Time" -> "Wolfman's Brother") – depending on where you look, you may get a different setlist.

In terms of the answer, Song A, Song B, or Song C (or some combination of them) will all be accepted as correct, but in terms of the theme that connects it with the previous track, only Song C makes sense. (I would have just skipped this section altogether but I didn't notice the setlist discrepancies until after I had constructed and uploaded the puzzle - my bad!)