But, once you get to the song's chorus, and hear Sia pull off some vocal acrobatics as she proclaims, "I'm going to live like tomorrow doesn't exist," you're not going to mistake this Aussie singer for any other pop star.

With five albums under her belt, and one of the most memorable music synchs of all time-her song "Breathe Me" plays during the last moments of the Six Feet Under finale-Sia has an impressive resume, but in the last three years has become known for writing hits for other people.