In reply to xedos.

get your facts right Sia was intorduced to America by Christina Aguilera who started working with her on Bionic(but i can be wrong) and she was even CA mentor on the first season of the voice however I know for a fact Sia was well known as a song-writer before she wrote Diamonds for Rihanna but you basic people would not shit about that because your knowledge of music is level 0