Whenever this concept pops up I think of a classic CSound piece made by Jacob Joaquin in 1999. It's the first execution of the idea that I'm aware of. He gave t

Whenever this concept pops up I think of a classic CSound piece made by Jacob Joaquin in 1999. It's the first execution of the idea that I'm aware of. He gave the notes a slower envelope so they sometimes seem to merge into a single tone. The source is also (not so surprisingly) quite short. https://freaknet.org/martin/audio/csound/#:~:text=Another%20Planet https://freaknet.org/martin/audio/csound/#:~:text=Another%20...