Highly specific music question: G Strat Map 7

[Hraesvilgr]

As opposed to just wondering where all of the music is from, like myself some months ago, and so many posters both before and after me, now I'm wondering if anyone knows where this track specifically is from: "G Strat Map 7" (download here if you don't want to pull it out of its folder manually). Parts of it remind me of a very cryptic, relatively unknown band called Teargas & Plateglass that I've been trying to track down more of, and I'm wondering if they might be connected in some way.

By the way, after earlier, more general leads on the music, I ended up tracking down and buying the Mehter Concert CD that a few of BC's tracks are from... I'm hoping this might work out the same way.