Modern classical music is music written in the 20th century and beyond. Although much of it draws heavily on earlier forms, modern composers also experimented with rejection of long-held ideas; notably, Arnold Schoenberg questioned the traditional notions of harmony with his twelve-tone system[?], and John Cage questioned the very definition of music with his use of chance and found sounds.
... (see DeCSS). See Professor Edward Felton's freedom-to-tinker Web site (www.freedom-to-tinker.com) for some observations on the DCMA, its proposed successors, and their ...