Real Emotion... it works nicely for the Yuna dance sequence... and it does have quite an upbeat, happy feeling to it which I think is going to be the overall flavour of FFX-2... but this style of J-pop in a FF... *not convinced*
I haven't heard the second theme they're gonna use but I hope its slightly less... well whats the word now hmm CHEESY.
However the singer is a very nice dancer