Sounds like a fun problem. I’d break it into three parts: 1) Data gathering, 2) Beat‑matching logic, 3) Continuous loop. 1. **Data** * Scan every room for sensors that tell you when it’s empty or occupied. * Build a small DB of available dance tracks with their BPM and a “mood” tag (e.g. “high energy”, “smooth transition”). 2. **Beat‑matching algorithm** * For each empty room, pick a track whose BPM matches the current tempo of the room’s ambient sound (if any). * If no ambient sound, pick a default BPM (say 120). * Store a queue of the next N tracks (N=5) that gradually shift mood so the flow stays interesting. 3. **Continuous loop** ```pseudo while true: for each room: if room.is_empty() and not room.is_playing(): track = choose_next_track(room) play(track, room) elif room.is_occupied() and room.is_playing(): stop(track, room) sleep(1 second) ``` * `choose_next_track` pulls from the pre‑built queue, rotates the queue, and ensures the BPM difference between consecutive tracks is <= 10%. Add a tiny delay so you don’t get abrupt cuts. Test the queue on a single room first; once stable, roll it out to all. That should keep the vibe flowing without you having to manually cue each beat.