In recent years, multitrack music generation has garnered significant attention in both academic and industrial spheres for its versatile utilization of various instruments in collaborative settings.

An Arduino Uno-powered music box with IR sensor, lights, servo motor, and SD card audio playback. - dnvr07/Arduino-Music-Box ...

I saw many videos showing a demo of a DIY music visualizer using these exact lights and an arduino. People seem to love to brag about how awesome their shit is but they won't show you how to make it.