George Lewis is a composer, electronic performer, installation artist, trombone player, and scholar in the fields of improvisation and experimental music. He has been a member of the Association for the Advancement of Creative Musicians (AACM) since 1971, and is a pioneer of computer music. Born in Chicago, Illinois, United States, Lewis graduated from Yale University in 1974 with a degree in philosophy. In the 1980s, he succeeded Rhys Chatham as the music director of The Kitchen. Since 2004, he has served as a professor at Columbia University in New York City, having previously taught at the University of California, San Diego. In 2002, Lewis received a MacArthur Fellowship. In 2008, Lewis published a book-length history of the AACM titled A Power Stronger Than Itself: The AACM and American Experimental Music (University of Chicago Press). The book received the 2009 American Book Award.