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.
... His teachings
far excel all the teachings of the saints. The book
gives counsels to read the Scriptures, statements
about the uses of adversity, advice for submission
to ...