Imagine the game of "Tower of Hanoi" (Wikipedia) generalized in number of disks and pegs. Also imagine that whenever a disk is put down on a target peg a musical instrument is played.
What would the resulting piece sound like?
Find out at the Towers of Annoy!
This implementation is HTML5/CSS and JavaScript and runs in your browser. A basic webserver that can deliver static content is needed but there is no server-side processing.
More information can be found at https://marian-aldenhoevel.de/towers-of-annoy/