http://www.kyopera.org/documents/education/operahistory1.pdf
good for opera
http://www.yusypovych.com/eng/what-is-the-opera/
Good for Opera
http://sfopera.com/Learn/Opera-FAQs.aspx?gclid=CNig39TA9LMCFcxAMgodYCEAOg
Good for Opera
http://library.thinkquest.org/15413/styles/styles.htm
good for opera
http://www.yusypovych.com/eng/what-is-the-opera/
Good for Opera
http://sfopera.com/Learn/Opera-FAQs.aspx?gclid=CNig39TA9LMCFcxAMgodYCEAOg
Good for Opera
http://library.thinkquest.org/15413/styles/styles.htm
Good for Opera and Classical. Could have some use with Pop.
http://www.good-music-guide.com/articles/styles.htm
Good for Classical.
http://musiced.about.com/od/glossaryofterms/tp/Music-Styles.htm
Good for Classical.
http://www.langlangfoundation.org/music-education/history-of-classical-music
Good for Classical
http://www.langlangfoundation.org/music-education/history-of-classical-music
Good for Classical
http://www.kennedy-center.org/programs/jazz/ambassadors/Lesson1.html
http://www.kennedy-center.org/programs/jazz/ambassadors/Lesson2.html
http://www.kennedy-center.org/programs/jazz/ambassadors/Lesson3.html
http://www.kennedy-center.org/programs/jazz/ambassadors/Lesson4.html
Awesome for Jazz.
http://www.kennedy-center.org/programs/jazz/ambassadors/Lesson2.html
http://www.kennedy-center.org/programs/jazz/ambassadors/Lesson3.html
http://www.kennedy-center.org/programs/jazz/ambassadors/Lesson4.html
Awesome for Jazz.
http://teacher.scholastic.com/activities/bhistory/history_of_jazz.htm
Good for Jazz.
http://jazz.about.com/od/historyjazztimeline/HistoryJazz_Timeline.htm
Good for Jazz.
Good for Pop.
http://www.shinemusic.com.au/musicresources/history-of-pop-music.aspx
Good for Pop
http://www.alexandermagazine.com/business/articles/popmusic.htm
Okay for Pop.
You can also use Wikipedia for general information and sound clips.
You can also use Wikipedia for general information and sound clips.