Sia has been played on NTS over 20 times, featured on 27 episodes and was first played on 30 December 2012.

Sia Kate Isobelle Furler (/ˈsiːə/; born 18 December 1975) is an Australian singer-songwriter, record producer and music video director. She started her career as a singer in the local Adelaide acid jazz band Crisp in the mid-1990s. In 1997, when Crisp disbanded, she released her debut studio album titled OnlySee in Australia. She then moved to London, England, and provided lead vocals for the British duo Zero 7.

In 2000, Sia signed to Sony Music's sub-label Dance Pool and released her second studio album, Healing Is Difficult, the following year. Displeased with the promotion of the record, she signed to Go! Beat and released her third studio album, Colour the Small One, in 2004. The project struggled to connect with a mainstream audience, and so Sia relocated to New York City in 2005 and began touring across the United States. She released her fourth and fifth studio releases, Some People Have Real Problems and We Are Born, in 2008 and 2010, respectively. She then took a hiatus from performing, during which she focused on songwriting for other artists. Her catalogue includes the successful collaborations "Titanium" (with David Guetta), "Diamonds" (with Rihanna) and "Wild Ones" (with Flo Rida).

In 2014, Sia released her sixth studio album 1000 Forms of Fear, which debuted at No 1 in the U.S. Billboard 200 and generated the top-ten breakthrough single "Chandelier" and a trilogy of music videos starring child dancer Maddie Ziegler. In 2016, she released her seventh studio album This Is Acting, which spawned her first Hot 100 number one single, "Cheap Thrills". The same year, Sia gave her Nostalgic for the Present Tour, which incorporated performance art elements. Sia has received an array of accolades, including ARIA Awards and an MTV Video Music Award.