Christopher Joseph Lennertz (born January 2, 1972) is an American musical composer for films, television shows, and video games. He is perhaps best known for his musical score for the 2007 film "Alvin and the Chipmunks," "Hop," and the Warner Bros. comedy "Horrible Bosses." He composed the score of Supernatural and more recently Revolution, two television series created by Eric Kripke.