We've not really any idea what you could do with Sia's breath, or why you might want it, but the world has been afforded the opportunity to buy a jar of the stuff. The "Chandelier" singer responsible for many of Rihanna and Beyoncé's bangers has donated a container of her air to the organisers of an Australian film festival held in her Adelaide hometown.

Amanda Duthrie, director of Adelaide Film Festival, waxed lyrical about Sia's exhalations in a local newspaper. “Gorgeously and magnificently she breathed into a jar for us," she told the Advertiser. "It's sealed with silver sealing wax so no one can accidentally open it. Whoever wins it will be able to break that seal – or just let it be.” 

The jar of old breath will be auctioned off by the celebrated Australian quiz masters Margaret Pomeranz and David Stratton, who both run the cult hit film review show At The Movies. The duo will be auctioning off Sia's air on 31 October after hosting their movie quiz night, with the proceeds going to charity.

So if for some reason you're keen to possess a jar of Sia Furler's breath, make sure you're in Adelaide on Halloween. 

Head here to read our interview with Sia about her performance art approach to pop.