Along with her regular child-prodigy dancer Maddie Ziegler, Sia was also joined onstage by Kristen Wiig at last night's Grammys. Watch their performance below.
As is Sia's wont since her sixth album, 1000 Forms Of Fear, catapulted her to a different level of fame, the singer performed facing the wall at the awards ceremony.
Though not actually anonymous in the way that acts such as Daft Punk are - there are plenty of pictures of the singer on the internet - Sia says, "I don't want to be famous, or recognisable. I don't want to be critiqued about the way that I look on the internet. I was at Target the other day buying a hose and nobody recognised me and my song was on the radio, and I thought, 'OK, this experiment is working'."
As fun as it is to watch her singing with her back to audience, Sia often enlists the help of dancer Maddie Ziegler, who appeared on both her 'Chandelier' and 'Elastic Heart' videos. Last night, Ziegler was joined by comedian and actor Kristen Wiig.
Watch Sia, Kristen Wiig and Madie Ziegler perform 'Chandelier' below
Sia was nominated for four Grammys last night, including Record Of The Year and Best Pop Solo Performance for 'Chandelier', but didn't take any home.