Hi, Sharon! I've played and completed the game (took 50 hours and I loved every minute of it!) and own the 2-cd soundtrack.
I love the music, but if you're interested in the discs purely as a Disney music fan, be aware that there are only 4 familiar Disney tunes, with the rest of the tracks all new compositions. The classic tunes are:
Mickey Mouse Club March
Winnie the Pooh
Under the Sea
This is Halloween
The arrangements of Winnie the Pooh and This is Halloween are wonderful. In fact, the moment the Pooh theme starts playing is one of the most emotional and heart-breaking moments in the game. I don't want to give the plot away, but Kingdom Hearts is a rather *dark* game with much heartache and sadness before the eventual triumph of good. (There's also a lot of humor along the way to lighten things up a bit).
Anyway, back to the soundtrack: The original score by Yoko Shimomura is terrific, ranging from a funny, bouncy theme for Wonderland to a cool jazz piece for the village called Traverse Town. There are a lot of dark themes for the villains and battles. Keep in mind that most of the pieces play as background music in the game, and so are designed to loop untill the player moves to the next scene. On the CDs, a typical piece will loop twice before fading out.
There are two standout, beautiful themes written for the game: Hikari and Dearly Beloved. Both themes appear several times in different forms. Hikari is presented at the beginning as the overture to the game, and it's incredible. It's also performed twice as a song, sung by Hikaru Utada. For the American release of the game, the song was re-written, re-arranged and renamed "Simple and Clean." I prefer the original Japanese version that appears on the soundtrack cds, but the American version has the very cool lyric, "Regardless of warnings, the future doesn't scare me at all."
The official soundtrack can be ordered through several online stores, including Animenation. (Their price for the set is $32.95).
Actually, since all the new music and characters are Disney property, I guess every new piece in Kingdom Hearts is now officially "Disney Music!"
Hope this helps, Sharon! (Just as an added 2 cents, the game is so amazing, I'd actually recommend buying a Playstation 2 to experience it!)
- Richard