I also liked that it didn't explicitly say how it decides when to play a note.

All the subway routes are normalized to 15 seconds long from beginning to end. The app then plays all 15 second routes together, playing the instrument assigned to the route when there's a train there.

Neat commentary on the instruments that were assigned to the route when you mouse over it.

The idea is novel/fun/cool, but the notes ARE random as far as we can tell. So if you're against AI music, you just like the idea but don't care about the music or... something else I can't imagine.

Enlighten me, please.