written since 1900 is called 20th century music. There have been more types
and styles of music written in the 20th century then ever before. In the
20th century, the only limit is the composer's imagination. Peter Schikele
has fun with his pieces by having players play on mouthpieces, or by gargling
with water during the piece.
The melodies are also very different from those of past periods. Anton Webern's melodies have leaps, and
are often made up of only two or three notes. Other melodies, like those
written by Bela Bartok and Alan Hovhaness, are based on scales taken from
the Middle Ages.
Technological developments have also had an influence on the 20th Century music, especially electronic
music. Composers like Philip Glass use electronics to create totally
new sounds, styles, and effects.