HOLY SHIT.
Jon sang the "Livin' on a praaayyyeeer..." before the solo without playback and ON KEY for the first time in years:
https://youtu.be/mp1PYBRRn8Y?t=3m3s
Yes, it's definitely a 120% moment and probably unsustainable in terms of regularity, but who cares? We got one more B4 properly hit by Jon in concert - let's see if he manages to do it again tonight...