The Modern Era

History of Music-Modern Era:
http://archiv.radio.cz/hudba/20cen.html

Music History-Modern Era:
http://www.ipl.org/div/mushist/twen/index.htm

20th Century Composers:
http://www.emory.edu/MUSIC/ARNOLD/20thComposers.html

The Modern Period:
http://www.empire.k12.ca.us/capistrano/Mike/capmusic/modern/modern.htm

The 20th Century:
http://www.classicalstudio.com/periods5.htm

Mid-20th Century:
http://www.hearts-ease.org/cgi-bin/index_c.cgi?period=Mid%2020th%20Century