Sadie Dupuis is an American musician, singer, and songwriter, best known as the frontwoman of the indie rock band Speedy Ortiz. She formed the band in 2011, and they gained recognition for their unique sound that blends elements of alternative rock and indie pop. Dupuis is also known for her insightful lyrics and distinctive vocal style. In addition to her work with Speedy Ortiz, Sadie Dupuis has pursued solo projects, releasing music under her own name. She is also a poet and has published a collection of poetry titled Crisis Apparition. Dupuis is recognized for her contributions to the music scene and her advocacy for various social issues.