2- XenoBattle - sounds good, it's the standard Xenogears battle song or the most often song you would hear.
3- XenoBoss - sounds a bit messed up, but it's the boss theme.
4- Xenogears GearsBattle - a song for gear-combat, not often heard though.
5- World Map - while wandering in the Xenogears world, this song would relax your thoughts.
6- Sky - Another great song, the theme of a hero.
7- Town of Lahan - Very peaceful and relaxing, but can only be heard once since this town will fall into a great tragedy. This song is one of the few happier songs in Xenogears.
8- Billy - With a gun in hand, the sad life of this holy person that believes in cleaning evil.
9- Yggdrasil - Airship song, the final "non-combat" model "Yggdrasil III".
10- Citan - The house of Citan, located at the high hills just off the town of Lahan. I would like a house like that; unfortuantely, you would need to fight some monsters to go to Lahan....oh well. This is another happy song that you won't hear much of.
11- Alice - She somehow reminds me of Aeris..... Was there a love between her and Fei??? sadly, this question can not be answered unless you had played Xenogears......
12- Musicbox - An old relic that seems to remind themselves of one's past. Later, the sudden self-collapse of this box gave an omen to the tragedy of Lahan and Fei....... notice this is another religous theme.
13- Deus is God? - Here it is, the ultimate boss song, try it. But it doesn't sound as nice as the "FF7's Angel-Sephiroth" song.
14- Xenogears Begins..... - Mixed feelings are implied within this melody, this song slowly begins the long complex tale of Xenogears.
15- Holy Church of Nisan - This song isn't just a song for a church.....Xenogears uses this song to provide a feeling for explaining important stories that's based on a religous theme.