Jammer
This webtoy will generate listenable music according to the evolution of a cellular automata which exists on a 2d hexagonal lattice. The lattice is topologically equivalent to the Tonnetz, meaning that tonal space is encoded in the layout of the cells. Defining a ruleset is equivalent to composing a song.
View the blog post about this to get more context and instructions.
This project is the next iteration of my previous musical CA webtoy: MusicBox.