You would still need a way to map the music to the person listening to it. Apple and Google could do this if you use their music services, but they already kno

You would still need a way to map the music to the person listening to it. Apple and Google could do this if you use their music services, but they already know where you are. I suppose if I have very unique taste in music and someone else knew about it, they could track me, but this is easily foiled by wearing headphones.