Looking for the title of an obscure original Xbox game (circa 2003)?

In 2003 I was running a video game store and we had the monthly Xbox magazine demo disk in our interactive unit. It would have been from one of the issues between August 03 and March 04. One of the video demos on the disk had the most haunting japanese music playing, mostly instrumental with some vocals. I never caught the name of the game, but I'm hoping someone out there is obsessive enough about the original xbox library and will recognize what I'm referencing. I'd love to hear that song again if anyone has any clue what game it came from. Sorry it's not much to go on.