Final Fantasy X HD Remaster OST - have you listened to a few samples?..here are they.

[JGarret]

http://www.square-enix.co.jp/music/sem/page/FFXHD/

It´s in Japanese, but if you´ve got a translator it really helps.

I´m really digging the 'new' battle theme and the 'new' boss theme, while others, like Seymour´s Ambition, I prefer the original.