Metroid Prime is a truly amazing game, and its soundtrack (composed by Kenji Yamamoto) is one of the elements that makes it so. It is beautiful, moody, and atmospheric. Every track fits the environment it was composed for - just as there are many different environments in the game, the mood varies from song to song, making each one stand out, having a feel of its own. If you haven't already played this game, listening to the music will make you want to.