Well, it's composed by Taiji, so in one way I wouldn't be wondering the western-stylishness. ^^
Oh thank you! I have been wondering ever since I heard it who composed it!
Actually, the first time I heard this song... as soon as I heard the choir-sounding part at the beginning I freaked out. I said "THIS ISN'T X!!" And I almost deleted it. But I kept listening and I'd know Toshi's voice a mile away.
I still didn't like it for a long time. It was just so WEIRD! But now I've been listening to X a lot lately, and I realized... that I absolutely ADORE this song! It has become one of my favorites, over time.
Sorry for the long story
It just amuses me how even the X songs I don't favor at first always end up being my favorites after a short time. XD