The San Francisco Orchestra Kids site provides students with the opportunity to experiment with music composition. The basic elements of music (tempo, rhythm, pitch, harmony, and timbre) are introduced in a fun and interactive environment.
The Dallas Symphony Orchestra Kids site gives students a great introduction to music history, the opportunity to hear and learn about the instruments of the orchestra, and tips on how to practice.
This website by the New York Philharmonic is a fun and great place to learn about composers, musicians and orchestras.
Great and fun place to learn about jazz and listen to jazz