These websites are great places to visit if you're interested in music.  You'll learn about theory, instruments, composing, and much more!  Best of all you'll have a lot of fun!

http://www.get-tuned.com/ - Learn about the tuning of select instruments

Music SMART Lessons - A large collection of SMART Board music lessons on a variety of topics

Jam Studio - Compose your own music by selecting chords and then choosing the instruments in your band

K - 8 Kid Tunes: Notation - Learn all about notes and the staff in these games

K - 8 Kit Tunes: Recorder Fingering - This game will help you learn to play the recorder

http://www.kenbrashear.com/ - Visit this website to view and hear a virtual drum kit

Ear Training - Use the letters on the keyboard to match the staff note played by the computer

Ear Training for Piano - Choose the correct key on the piano when the computer plays/shows a note

Super Duper Music Looper - Use this website to make your own music by selecting istruments and adding them to the grid

Sphinx Kids - Explore classical music

SFS Kids: The Music Lab - Interactive website with Basics, Tempy, Rhythm, Pitch, Harmony and more

mustech - Another wiki with a lot of other websites you'll love exploring!