Isis (sometimes stylized ISIS) was an American post-metal band founded in Boston, Massachusetts in 1997 but later based in Los Angeles, California. They borrowed from and helped to evolve a sound pioneered by bands such as Neurosis and Godflesh. This sound, influenced by heavy music, consists of lengthy songs focusing on repetition and evolution of structure. Isis's last studio album, Wavering Radiant, was released on 5 May 2009. They disbanded in June 2010, just before the release of a split EP with the Melvins.