This site allows for study of the different instruments in the orchestra and you can also hear their sound via easy to reach sound files. (
http://www.playmusic.org/stage.html
)
On this site you can test your knowledge of the instruments by identifying their sound and matching it to the correct member of the orchestra. (
http://www.thirteen.org/publicarts/orchestra/
)
Jazz instruments are featured on this site, which includes the members of the rhythm section and prominent solo instruments found in jazz groups. (
http://www.ccsn.nevada.edu/finearts/music/wherry/jazz/syllabus/instrument.html
)
This Smithsonian site offers background information on early American instruments like the hammered dulcimer and the organ. (
http://www.si.edu/resource/faq/nmah/music.htm
)
This site offers a wealth of information on world music instruments with many photos and links to sound files and also suggestions for starting your own library of music. (
http://www.asza.com/index.htm
)
This site covers the instruments of the orchestra, complete with sound files for identification along with ideas on concert etiquette, orchestral composers and terminology. (
http://www.brottmusic.com/default.htm
)
This is a great collection of choral music performances by the best groups in the business. It includes sound files of traditional mixed choirs, men's groups, women's groups, gospel ensembles, and lots more. (
http://www.geocities.com/hearchoirs/page1.html
)
This site offers a good description of the various forms of synthesizing music and the history of the devices that create these sounds. (
http://en.wikipedia.org/wiki/Synthesizer
)
This site offers many free music samples of popular styles including hip-pop, alternative, Christian, and even children's music. (
http://www.thefreesite.com/Free_Sounds/Free_MP3s/
)