Not sure why you are surprised TGJ, she has always been able to sing live, remember a band called N-Dubz? Titanium was not the greatest chocie for her second song as Sia has a fantastic voice, I thought the same when the teenage girl did it on The Voice, trying to emulate someone else's style never works. Of course it was sooooooo long ago, I'm sure you have an excuse for forgetting :oP