about musical styles:
Jazz Kids This site has a jazz timeline, biographies, and activities for kids.
about musical instruments:
Dallas Symphony Orchestra (DSO Kids) You can hear instrument sounds, see orchestra seating charts from different periods in history, learn how to make homemade instruments, listen to music, and much more!
The Virtual Museum of Musical Inventions Musical instruments invented by children.
new songs and games:
Rockin' Recorders Learn new songs to play on your recorder. Play along with MIDI accompaniments.
Horses Have some fun with ostinato (patterns that repeat over and over).