This immediately reminded me of the teamLab Planets [1] experience in Tokyo, Japan.
Specifically "Flowers and People, Cannot Be Controlled but Live Together" [2] - the entire soundtrack for the experience was incredible, and this ambient garden took me right back. Thank you for sharing!
It's true, this project was always related to exhibits with audio sources laid out in space. While doing research for this, I came across software specifically designed to help lay out audio sources in exhibits. I hadn't heard of teamLabs though, some of their art seem almost like physical versions of ambient.garden!