Au Revoir Simone is an indie pop band from Williamsburg, Brooklyn, New York that formed in late 2003. The group consists of Erika Forster (vocals/keyboard), Annie Hart (vocals/keyboard), and Heather D'Angelo (vocals/drum machine/keyboard). Forster and Hart became friends while traveling by train from Vermont to New York. The threesome played at both the Treasure Island Music Festival and the Monolith Festival in September 2007.