20th-centure classic music

20th-century classical music developed or reacted to the trends started in the previous century. At the turn of the century, music was characteristically late Romanticin style, while at the same time the Impressionist movement, spearheaded by Claude Debussy, was being developed in France. America also began developing its own vernacular style of classical music, notably in the works of Charles Ives, John Alden Carpenter, and (later) George Gershwin, while in Vienna, Arnold Schoenbergconceived atonality and later developed the twelve-tone technique. Classical music in the 20th century varied greatly. The varieties included: