I happened to be at a community day festival in Pender Harbor BC Canada in June of 2011. Although I had heard about these spring suspended drums, I had never seen them before, even in pictures. Seeing them in action was unexpected, but I could not resist the opportunity to take a video and immediately posting it to my account on youtube.
Since then it has received more than 117,000 views. Amazing!
For more information see my previous post.