PBS
Classics for Kids: Musical Instruments
An A-to-Z directory of all the instruments and tools of the orchestra. Each entry includes a description, a picture, and a sound sample.
Other
El Rincon Musical Peruano (Music of Peru)
Excellent Peruvian music resource. You'll listen to different melodies from Peru, presented with their lyrics and scores. The information is in English, French and Spanish. Includes ballads, carols, classics, cumbias, huaylas, huaynos,...
Dallas Symphony Orchestra
Dallas Symphony Orchestra Kids
This interactive site offers students resource for learning about composers, their works, the logistics of orchestra seating, the functions of different instruments, and the like.
Ducksters
Ducksters: Music for Kids: Famous Pianists
A site showing some of the worlds greatest piano players ever. Learn about famous pianist from all genres of music.