Parasite Eve Wiki

Right, so my friend was in Japan just in time for the release of The 3rd Birthday and it's soundtrack, which he bought and sent me the mp3's before he can send the CD, and as I listen to it I remember how excited I was over the samples.

So, my question to you guys, based on either the samples or the title, what songs were you looking forward to hearing and were there any that you didn't care for?

Admittedly I was most excited for Primal Eyes, but Waiting For Combustion made me somewhat nervous, who exactly is the song for? It makes me hope it isn't Aya, but then again it could just be a song referencing her memories.