This is a good shot of the chain that holds the head support back, underneath the carcass. For the production, I stapled on a black drape on the back of the clock, so that when the mouse (dancer) comes out, you can't see through to the backdrop.... This is a good shot of the chain that holds the head support back, underneath the carcass. For the production, I stapled on a black drape on the back of the clock, so that when the mouse (dancer) comes out, you can't see through to the backdrop....