Greek-American musician. I'm totally exposing myself to ridicule for admitting that I like her music:
Wikipedia: http://en.wikipedia.org/wiki/Diamanda_Gal%C3%A1s
YouTube:
"Gloomy Sunday" ("Hungarian Suicide Song")
http://www.youtube.com/watch?v=KzWVWY5QUzg
"I Put A Spell On You"
http://www.youtube.com/watch?v=yMWR1SesqM0
There's not many pictures of her without her devil-makeup: