Click on a green circular thing to start that thing making beats. Each will rotate around and play a beat when the dial hits the top of the circle. Pressing a circle a second time stops that circle from playing a beat. The top row of circles plays trombone notes (labeled by note letter) while the bottom row plays trumpet notes. Each circle starts its cycle of playing *exactly* when you click on it (modulo event handling delay and other things), so you should be able to time repeating micro-rhythms with this. For extra fun, grab a bunch of laptops or phones, set each one playing a variant of this, and allow people to "jam" by triggering repeated sound loops. This will sound more compelling if the audio is coming from differnet parts of the room (i.e. if each device plays independently), sort of like a drum circle, but with less skill
