Help me out: What’s this music from?

I downloaded it as apart of a bunch of other Final Fantasy OST’s. It was called: Seymour’s Ambition, but when I listened to other tracks I had of Seymour’s Ambition from FFX, it sounded completely different.

With that in mind, what is this? It surely doesn’t seem like a Remix of Seymour’s Ambition. It’s gotta be some form of FFX music, because there’s that choir type echo in the back.

http://www.youtube.com/watch?v=lvSOUop_ziw

It’s "Decisive Battle" (from Final Fantasy X) without the intro–probably a fan made cover. The quality is bad, as are the synth chorus sounds. The real version is here (http://www.youtube.com/watch?v=NvhFUDWZls8&feature=PlayList&p=EE9B8E4750CB344A&index=86).

Awesome! thanks dude, for the quick & informative reply!

This has been bugging me over the course of half a year until I finally decided to figure out what this was, just today. 😉

No problem.