I got sucked into reading Reddit this morning (seriously, I've been on there for like four hours and can't stop myself … ahhhh).
Anyway, one Redditor posted a video (the Rihanna cover above) of his girlfriend singing and girl has the most unique voice I think I've ever heard. Take a listen. Her voice has not been enhanced or autotuned, that's how she actually sounds.
Crazy cool. Her name is Emma Robinson. You can watch some more videos of her singing on her YouTube page.
And here's a cover of Hallelujah just to show that the first video wasn't a fluke.