Synthesised
It's synthesised. Get better sound samples, the drums are all the same and orchestral sounds terrible.
I've heard that song a million times from final fantasy remakes and that one's one of the worst. No offense intended.
You should check around and look for some decent sound libraries, there's a number of users here who use free stuff, I never managed to track it down though.
The looping was good though, I can't tell when it ends and when it starts, so that's good. You just need to really work on the clarity and quality of your instruments.
Also, get new drums. Bring some thunder into the piece, the current drums are weak at best and don't constitute to much of a beat. Add some variation to the beat structure and the individual beats, so they don't sound all the same. No drum ever does.
Tune is ok. You could do a lot better with it though. I'll leave that to you though, as there are currently no ideas forthcoming.
Good luck, Krayon