isk, the original melody is called "June Mermaid". Many people acclaim that melody as one of the better ones in Xenogears, but I've never really taken to it.
Funny that I absolutely adore this remix though, great job!
My one gripe is the part at the end, with the abrupt change in melody. I know that in the original, the abruptness was what made the piece so transcendental, but a lead in wouldn't have hurt, especially since the other parts of the song flowed so well.