Sia is an Australian singer-songwriter known for her powerful vocals and unique style. She first gained recognition in the early 2000s as a guest vocalist for the band Zero 7, before launching a successful solo career. Sia is also known for her distinctive fashion sense, often choosing to conceal her face with wigs and elaborate headpieces during performances and public appearances. Her music is characterized by emotive lyrics and catchy melodies, with hits such as "Chandelier" and "Cheap Thrills" earning her a worldwide fanbase. In addition to her musical talents, Sia is also an advocate for mental health awareness and LGBTQ+ rights.