Great review, Mr Bertolet. At the show, I heard Sparks being teased (or at least *almost* teased) by Trey in the last minute or so of the Energy jam. He hits that chord a few times starting at the 9:20 mark. They definitely could've ripped into it at that point. And speaking of Sparks, check out the 7:30 mark (or a few seconds earlier, if you're feeling saucy) of the Piper jam - the band momentarily settles into a groove which sounds a heck of a lot like the conclusion of Sparks.