Sia has proven time and again that she's not only one of the best songwriters around, she's also a killer performer. Case-in-point, last night she floored The Voice's audience with a rendition of her 2014 hit, "Elastic Heart." No backup dancers, no backup vocalists, just a stage, a microphone, and the most fabulous blonde wig I've seen in a minute. All by her lonesome, she brought the house down and that's not nothing.
Sia Performs 'Elastic Heart' on The Voice
The bisexual chanteuse wowed the crowd last night on NBC’s hit singing competition.
