I came across this probably in 2007. It was a simple mashup of two Final Fantasy X songs: "Servants of the Mountain" (or "People of the North Pole"--the Mt. Gagazet theme) and "Suteki da ne". It was unpolished and probably unfinished, but it was good. Really good. I must've accidentally deleted it at some point in time, since I can't find it anymore. If anyone knows about this mix and could upload it more me, I'd be very grateful.