I built recently this music box that kind of has a barrel with little spikes and it plays a song. But I did a large version of that that pops a sheet of bubble wrap and then like plays tones into a pan flute. So yeah, you can actually program it to play different songs. That won't kick my butt in so many creative ways and it was such a pain. It's probably the like weird funny project that's taken me the longest and like the biggest engineering effort.