I am like a giggly little school girl when I see anything by halc posted.
First off, the original theme is prolly may top 3 favs from the entire ffx soundtrack, so the initial sighting of this being the source got me excited.
I absolutely love the way things were kept mellow if you will, akin to the source, yet there are still many things happening at once, which I think halc has demonstrated he can do marvelously in previous work, such as that super awesome Outset mix. The main melody was preserved while a lot of additional components were added to enforce the chippy-ness, but also strengthen the track. I think this was done successfully, not sure what else I can say. Love it.
At this point there isn't a song I wouldn't want halc to get a stab at, and this is just another example of that.