By Kathy Hinde, described as "a kinetic sound sculpture in a pond. Vessels fill up with flowing water until they overturn and spill into gongs, generating a shimmering, living composition inspired by the waterlogged conditions necessary to sustain the peat bog."
This was at the Botanic Gardens in Edinburgh, part of Below the Blanket, an outdoor evening event featuring visual, sonic and kinetic installations inspired by the Flow Country in the Scottish Highlands. There is more about it here.
I would definitely recommend this event, it was intriguing and full of originality. And I expect there would be no problem getting tickets as there were very few other people there when we went - which was one of its attractions.