For those who don't know it, there are three parts to the Bronco variation:
- Counts 1-2: Two leaping steps, like a flying one-step, lead backing.
- Counts 3-8: Two Newports, a 1-&-2-&-3 waltz pattern (this is a hemiola).
- Counts 9-16: Turning two-step polka.
What Bob pointed out for the Bronco, though, is that these two kinds of momentum are not only both cyclical, but offset. At the beginning you're just charging on ahead, but not rotating at all. (I wish I had a name for this step. I usually just think of it as leap-leap, or run-run.) With the Newports you start rotating, 6 counts for a full rotation, but you necessarily slow down a bit in your forward momentum. By the turning two-step you're getting around in 4 counts (faster than the Newports) but that pulls you in a bit more, since they're rather more vertical than a regular polka.
What this means is that something is always accelerating. You're either speeding faster ahead or spinning around more. It's absolutely brilliant. I liked it so much that even gave it a "chalk talk" (as Richard says) during the class to draw a diagram on the chalkboard, which I will reproduce here (the 1's, 2's and 3's are just shorthand for low, medium, and high):
While I'm here, I'd like to give many thanks to Ryan and Monica for teaching the Bronco at Waltz Week 2002 (or 2003?) which is where I learned it. Bob and I have had great fun with it for a long time now, and are hoping more people get into it as well.