She may be masked and in a fluffy coat, but everyone knew when Sia's booming voice filled David Guetta's packed tent. The eccentric Australian crooner came out to sing her smash hit collaboration ... more 
She may be masked and in a fluffy coat, but everyone knew when Sia's booming voice filled David Guetta's packed tent. The eccentric Australian crooner came out to sing her smash hit collaboration "Titanium" during Guetta's Weekend 2 performance at Coachella 2012. less 
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Mon, Apr 15, 2013 8:00 PM EDT