Melody #005 is...
Spoiler:
ED of
serial experiments lain, "Tooi Sakebi", performed by Nakaido "CHABO" Reichi.
Next one is one of my all-time favorite anime songs. I listen to it at least once everyday on my way back from work. Unlike some other songs that I grew to like them because of their shows, I have never watched a single minute of next one's show, so I really love the song because of the song itself. Hopefully someone will recognize it.