The recording started late; only the final 2 times through can be shown.  The music quality is poor.

There is another (3x through) video of this same demo taken from floor level behind 3c position.

The progression is in error.  On bars [27-28] and [31-32] the circle goes only 1/3 round (instead of 1/2), so the progression becomes (3,1,2) instead of the correct (2,3,1)