Nathan Peter Larson (born September 12, 1970 in Maryland, U.S.) is an American guitarist, singer, songwriter, and author widely known for his numerous film score compositions. He is married to Nina Persson, the lead singer of the Swedish rock band The Cardigans. In May 2011, Larson's debut novel entitled The Dewey Decimal System was published by Akashic Books. The second book in the series was published summer 2012, and is entitled The Nervous System.