Light in the reins (jump lesson)

Duke was moving great today, and we had a total angels singing moment.  John had us warm up working on 20 meter circles, and after he had me do a bit of flexion, he told me to give a little on the inside rein and then give a little on the outside rein at the same time.  And Duke went light in my hands and kept going.  It was AMAZING.  I have never felt that before.  John said later that while Charlie was good about making himself round, he didn't get light in the hands.
I was supposed to take that amazing, miraculous, feather-cloud feeling and keep it while we jumped.
So we started with pole, cross rail, pole, pole, but with a chute in between each.
John put the middle pole up to a vertical, and then the final pole to an oxer, which he gradually increased.  I thought we made our turns at the far end much better than last week, although they still did need some improvement.  John told me a couple times to put my leg down and to open my chest and sit tall, and he said that when Duke is very calm and quiet, I need to help him by putting on my leg.  So I'd squeeze at the cross-rail, squeeze at the vertical, and squeeze at the oxer, but look up and through (past) the oxer as I came in.
Then John had us jump the stand-alone vertical after the grid.  This was, after the assistance of the grid, a little harder to do.  I would get the line wrong, but then stick to it, and we came in really short a few times and then longer a couple times.  John said that I need to watch for Duke not paying attention - that if I pick a line and stick to it - Duke needs to commit to it as well.
Duke got pretty sweaty, but he was really nice to ride over the bigger oxer (maybe 3'10"?) and I felt like we did a little better on our leads too.
But that lightness in my hands?!  Damn ... that was awesome.