Liv Kristine is a better singer than anyone mentioned in this thread.
I do agree with Kid, though. Christina has a great voice, but her songs are terrible. Beyonce and Britney should have their vocal chords removed for the good of humanity.
Norwegian singer for the band Theatre of Tragedy, also put released her own solo album "Deus Ex Machina" in 1998. Not someone you'll hear on the radio or the MTV...