Frank Kogan

So this earlier rehearsal version, with the double-timed piston, is the one we should all be watching (starts at 1:37* [EDIT: except this version, being shorter, leaves out the part where they charge across the stage in formation; so for the right and full version of the dance, we've got to go back to the fancams of the preview performances, which unfortunately have bad sound]):



*But the instructions that YouTube Help gives for starting it at 1:37 on the embed — basically by adding "#t=1m37s" to the URL — don't get it started there.