Andreas Gysin had built Kiddysinth with Shockwave in 2001. It is a cute audio toy. Cause I liked it that much I have coded a Flash version with the new Sound API. I want to make it more dynamic in future and add some nice graphics and animations for my daughter. Til then check out the source code to see how it works.

The particles have their own note value, while the wheels affect their octave. Drag them all to alter the melody.