Sia is an Australian singer-songwriter known for her distinctive voice and emotive music. She gained international fame with hits like "Chandelier" and "Elastic Heart." Sia often uses her music to explore themes of identity, love, and personal struggles. She is also recognized for her unique visual style, often performing with her face obscured by wigs. In addition to her solo career, Sia has written songs for other artists, including Rihanna and Beyoncé. She has received numerous awards, including Grammy nominations, and is known for her innovative music videos that often feature expressive choreography.