will the music on the 360 version be  leona lewis music or  japanese music?

I think even the Japanese version has Leona Lewis as the theme... doesn't it? 

 I imagine every localized build of the game will feature the song with English words in it. Call me craaaazy, but I'm pretty sure that's what'll happen... Incidentally, are Sony fanboys somehow less equipped to answer this question...?

It'll have the Leona Lewis track. Both the 360 and PS3 versions released in the US and Europe will feature that song. The Japanese theme, as its name suggests, is only in the Japanese version of the game. I'm not entirely sure where you intend this thread to go, sir. There's enough flame-bait surrounding supposed "differences" between the two versions as it is. 
 
EDIT: Just to clarify: only one Leona Lewis track is appearing in all the Western releases of the game. It's replacing one Japanese track from the Japanese release. The rest of the soundtrack will be unaltered, I should think.

As long as you can skip the intro and Leona Lewis doesn't play during the game, I'm fine with that. Some of the creative direction in this Final Fantasy has me worried for Square Enix. :|

All NA/EU version will have the stupid english version.  The Japanese tracks are exclusive to the Japanese version, my copy of the FF13 OST doesn't even have the stupid English track.

What a horrible song..might as well play  Beyonce - no scrubs   while Lightnings slapping a bitch