I wouldn't quite call it techno. There's one spot in the song that sounds a bit techno (it's 10 minutes long), but the rest of it is pretty much orchestra.

Unlike Dancing Mad, which repeats quite often (yes, I'm looking at you 2nd Tier), Highbrow doesn't have much repetition in it, and when it does, it builds upon it. Part of what makes it so great is that it's not just there to sound cool, it actually fits in so well as a final battle song.

If you want to hear it I'm sure you can find it somewhere. There was a place that was Laguna something I don't remember what it was called, but they usually have Square and Square Enix tracks.

And by the way, the song to the first form of the final boss is actually jazz. Yes, jazz. I don't know how Tri-Ace does it, but they can make anything work.