Teeth & Tongue were an Australian indie rock band formed in 2007 by Jessica Claire Cornelius, a New Zealand-born singer-songwriter and musician. The project has included other members, such as James Harvey on drums, Marc Regueiro-McKelvie on guitar and Damian Sullivan on bass guitar and synthesiser. Teeth & Tongue released four albums, Monobasic, Tambourine, Grids and Give Up on Your Health, before disbanding early in 2017. The stage name had also been used for Cornelius' solo performances, but since 2017 she has performed and released material under her own name and relocated to Los Angeles late that year.