This example shows a collaborative music-synchronized light show using 42 BBC Microbits, where students program LED patterns that respond to a song’s rhythm via radio-frequency signals. The project adapts the Microbit “Fireflies” example, using MakeCode’s block-based editor and the radio API (`radio.sendNumber`, `radio.onReceivedNumber`) to sync all devices. It demonstrates shared-state coordination across multiple embedded devices, with each Microbit displaying unique blinking sequences that collectively form a unified visual performance driven by the chosen track.