Sia Kate Isobelle Furler (born 18 December 1975), better known simply as Sia (/sɪə/or /ˈsiːə/), is an Australian downtempo, pop, and jazz singer and songwriter. In 2000, her single "Taken for Granted" was a top 10 hit in the United Kingdom. Her 2008 album Some People Have Real Problems peaked in the low 50s on the Billboard 200. At the ARIA Music Awards of 2009, she won the award for Best Music DVD and received six nominations at the ARIA Music Awards of 2010 and won Best Independent Release and Best Pop Release for We Are Born and Best Video for the song "Clap Your Hands".

As a writer, Furler has collaborated with many artists including Christina Aguilera, Eminem, David Guetta, Flo Rida, Afrojack, Jennifer Lopez, Shakira, Lea Michele, Rihanna, Beyoncé, Kylie Minogue, Leona Lewis, Hilltop Hoods, Katy Perry, Kesha, Rita Ora, Britney Spears, Jessie J, Oh Land, Angel Haze, Celine Dion, and Maroon 5. She co-wrote and featured on Billboard Hot 100 top ten hits "Titanium" with David Guetta -- with whom she also produced the single "She Wolf (Falling to Pieces)" -- and "Wild Ones" with rapper Flo Rida. All three songs achieved international success.