Thought I should just mention this.
Eir Aoi, the artist who sang the ED song of Fate/Zero, just opened up a fanpage in Facebook.
I found out about the page when I saw the advertisement on the sidebar.
Looks like that her maxi-single came out a few days back, October 19, 2011. Surprisingly enough, she is quite fluent in English. Or that the one writing on the page is believable…
At any rate, head over to her Fanpage and like it.