Who was the FEMALE singer who sang with Ville Valo in the HIM cover version?

Please don't answer saying Blue Oyster Cult. I know they did the original. That's not what I'm asking for. I'm asking for the name of the female singer who sang along with Ville Valo. Thanks. And also, don't answer I don't know, because that's useless, a waste of both your time and mine. Thanks so much for the help.