I just added a review on this show, but wanted to share this here as well. I have a very real theory as to why they played Sparke>Halley's:

Our group headed to the lawn early to get a good spot. . Once we find a spot, my boyfriend of 6 years, Andrew, asks our friend to take a photo of us with the venue in the background. As our friend is taking the photo, I notice that all our other friends had their phones out, and think to myself “I wonder why they want this picture too?” The next thing I know, Andrew is holding my hands and looks me in the eyes as he begins to recite a poem he wrote using different Phish lyrics. He then gets down on one knee, busts out the ring, and says, “Hayley, will you marry me?” Of course I said YES!! I was in absolute SHOCK! It was the most beautiful moment of my life. I love this guy more than words can explain...Of course he planned the most epic proposal ever!!!!

Right after the proposal, Mike Gordon’s wife Susan just happened to be standing there and congratulated us. We introduced ourselves, and she asked us if we had any songs that we wanted to hear that night that would be appropriate for an engagement. Andrew said “Sparkle” would be a good one... well, what song do they play in the second set?! Sparkle! And what song do they play immediately after? “Halley’s Comet,” which has always been my song and one that I always hope to hear. I knew in my heart that it was not a coincidence at all. That was the first time they’ve ever done those songs back-to-back! They played it for us!!! I still get chills when I think about it. To top it off, they closed the set with “Waste.” The night and weekend was the most magical time of my life. THANK YOU PHISH for continuing to blow my mind and heart wide open!

@PhanArt said:

@PersnicketyJim said:

A possible explanation for Sparkle, Halley's > Light: the ISS passed overhead at 10:27pm.

I was camping ~50mi north of the Gorge, and watched it emerge over the SSW horizon. From the stage, the band may have been able to view the entire transit, while NW-facing fans might not have noticed at all.

Also, the Set Your Soul opener is reminiscent of 2013's Architect.

This would have been awesome to know when writing this review. It just seemed so random and didn't connect the second set together very well. If that is what they were thinking in playing those songs, then that is awesome