Sadurn is an American indie-rock band from Philadelphia featuring Genevieve DeGroot and Jon Cox. The band began as a solo project of Genevieve DeGroot in 2017 shortly after they had begun learning guitar and writing songs. Jon Cox joined the project later that year on accompanying guitar, and the two began circling the Philadelphia DIY scene as an acoustic duo. In 2019 Sadurn released two EPs through local label Dead Definition, one entitled “Gleam” and the other a split with the band Ther. In 2020, the duo expanded, with DeGroot's friend Amelia Swain joining as drummer as well as Tabitha Ahnert as bassist.