Winter Severity Index is an Italian post-punk band founded in Rome, Italy by four young women who have already had experiences as musicians of the city scene. Simona collaborated with many Roman artists and worked as composer for theater; Diana Salzo played in other indie and post-rock bands; Elyria was the drummer of rock and punk sets; Mushy worked and performed as solo artist in experimental projects. The group started in 2008 on the basis of their friendship and common interest for 1980s new wave and post-punk music