Data Insight
Sia is a high-authorship artist across her catalog, she co-writes virtually every track on her own albums, even as her primary commercial role became hitmaker-for-hire for other artists. On early albums, writing credits were concentrated between Sia and a small circle of collaborators. On her pop-era records from 1000 Forms of Fear onward, she typically co-writes with producers like Greg Kurstin, Stargate, and Jesse Shatkin. The lyricist score across her catalog is consistently very high; the composer score is somewhat lower, reflecting reliance on outside producers for musical construction while Sia owns the words.