Lol, I read all the posts! Must have overlooked it somehow. Earthian is about angels, one of whom has black wings and never STFU about it. It's done by the same mangaka who did Loveless, which is probably why you've heard of it. It's uber cheesey and 80's, but I love it to pieces.
you know what, that's my bad. I mentioned it in the discussion thread, not here. oops.
I just went to my bedroom to look at my CD collection and find out why I was familiar with the name. way, WAY back when Napster was cool, I made myself a CD of a bunch of anime music. the Earthian theme just so happens to be one of the songs on my CD. I'm not sure how I found it, but I loved it. this song: http://www.youtube.com/watch?v=m1EsPFjuE14&feature=PlayList&p=BE8B5EBFDFEAA82A&index=1. the bad thing for me is that it was cut off so watching that video was the FIRST time I've ever heard it all the way through. now I don't know where to find the full MP3.