turn it and the sun goes out
20 HP
A real black disc crosses a lit sun, and what it hides you can't hear. The low end goes first, then the middle, until a thin bright crescent breaks into beads and one point flashes. In the dark a door opens. Then the disc moves on, and the sun comes back from the other side.
Turn a knob: drag it or tap either side of it, roll the wheel over it or use the arrow keys; a double click puts it back. Take the moon: drag it round by the moon or by the big knob under the sun, or tab to the big knob and use the arrow keys. Let go moving and it carries on. The patches step on by themselves until you touch something.
example patches
Everything TOTALITY does here is its engine as designed, running in your browser, the moon's weight and motor included. The loop and what's in DARK are a stand-in rack.
The left of the sun is the low end of whatever's in SUN and the right is the top, and each part of the sound is as loud as you can see of that part of the sun. So the moon doesn't stand for a filter. Its shadow is the filter, and it can't disagree with the light.
Only in the dark, a door opens.