Hello Greg,
Yes, too bad the quality of the video (or my computer's) doesn't allow an appropriate view, but I understand what you mean; I saw a show of "Stomp"-if I remember correctly, with lots of flags, acrobatic performances and brass. I will try to watch the show from other more powerful computer.
Parade arrangements seem computer-generated (line becoming a square which becomes a kind of cross/star, kind of recall computer-screen-savers). It's impressive, don't get me wrong; but if you get me wrong, take it as a kind of encouragement

. The concept itself, like it is, doesn't come only from the computer

.
I will also try to understand what you said about "framing theme", if the marching routine is a kind of reflection of graphic representation of music.
I'll be back soon,
Fatcat