Anecdotally, I use a bike bell and I've never collided with a pedestrian. And when in the role of pedestrian myself, the only time I've ever had trouble with c

Anecdotally, I use a bike bell and I've never collided with a pedestrian. And when in the role of pedestrian myself, the only time I've ever had trouble with cyclists is when they didn't ring their bell (or have one to ring) or when a cyclist deliberately passed as close as possible to me (I suspect in some selfish attempt to not lose energy with a more courteous but very slightly longer diversion from their straight line of travel.) I really think a bike bell should be sufficient for your needs. A card in your wheel spokes would also get the job done and be a lot less obnoxious than music.