Kris Morf created a small, but unusual WebGL application using
CopperCube. It looks like this:

You can rotate the view in 3D, and click on the individual drums in order to play them. Alternatively, you can also press the buttons 1-9 on your keyboard. It's quite fun. :) Nice to see something unusual being created with the editor.
Warning: The application needs about 10 MB to download,
start it here.
As all WebGL apps created with CopperCube, it uses HTML 5 audio to play back the sounds, btw.