In times of drought – or plumbing problems – it is still possible to hear music, you just have to bring your own water.
If you look carefully through the slits in the cover in some places you can see a wire mesh. Below the mesh are trays of gravel that break up the flow and cause drips to form in an unpredictable manner.
If you sprinkle water from a bottle onto these areas you’ll hear an initial flurry of sound followed by a period of more measured and melodic music.