Different music?

Alright, I was wondering if anyone knew if the music in the Japanese and International versions of the game was different? Reason being, I recently got some of the songs off of the FFX Piano Collections, and it's completely different from in game. I know it's gonna sound a little different, but they don't even retain the same melodies. It made me wonder more because the FFVII piano collection music was really good, and it was the same songs, just done in piano.

So yeah, any comments would be appreciated.

well i was listening to real emotion and it does sound different to the one in the game also the piano versions are always different sounding from the ones in the games seeing as it is just pianos that make the music and no other instrument

What. Ofcourse the piano collections are different. The music in the games are the same. Except a few songs with vocals. They're often in japanese in the japanese versions (duh).