20th and 21st century music has changed the world in many forms. Some elements of the previous century have been retained but there is a growing move towards post-modernism, polystylism and eclecticism, which seek to incorporate elements of all styles of music irrespective of whether these are classical or not. These efforts represent a slackening differentiation between the various musical genres. Pop, jazz, rock, and others are seen as styles to be used in any work, rather than as separate disciplines. The combination of classical music and multimedia is also a notable practice in the 21st century.
The 20th century was a big start for women composers. Although women have been composers in earlier centuries the 21st century has seen an increase in their number and importance.