Ann Marie Simpson-Einziger (born May 26, 1979) is an American violinist, inventor and technology entrepreneur. Ann Marie has closely collaborated with Hans Zimmer on numerous film scores, including Sherlock Holmes, Interstellar, 12 Years a Slave, The Little Prince, Man of Steel, and Captain Phillips among many others. Ann Marie has written and performed with a wide range of artists including Pharrell Williams, David A Stewart, Skrillex, Damian Marley, Robin Thicke, Tyler the Creator, Hans Zimmer, Jethro Tull, Steve Vai, Dave Matthews Band, Ringo Starr, A.R.Rahman and Mick Jagger's group SuperHeavy and Yanni. As a serial entrepreneur and inventor, Ann Marie is the co-founder of wireless networking technology platform, MIXhalo, and also co-founder of biotechnology startup, Versicolor Technologies. Ann Marie received her education at University of Virginia, where she double-majored in Music and Biology.