Click here for some lovely Rebirth GC audio.
Mix-Core, the folks you know and love for Rebirth, have released a couple MP3s for you to check out in the 'Works' section of their site. Cube.ign.com has them mirrored with a basic summary of the tracks, as well:
Now, after releasing the opening and ending sequences to the Rebirth, Mix Core has further opened up its media archives to bring you two MP3s of the respective sequences. The opening portion of the soundtrack introduces the main theme which is representative of the tragedy, featuring slow Japanese-influenced string arrangements. The second track features a mixed set of floating piano choruses and inquisitive violin sets that eventually weave their way back into the main theme.