A friend of mine was once telling me about how teens were loitering, cruising & causing problems outside their place of business. I told him that if he'd put a speaker out there with loud classic(al)/opera/etc. playing, they'd high-tail it out of there in no time. He did, & they did. Cops liked it so, they suggested it to all the businesses in the area & cleaned up that city.
    Turns out that there was a psych experiment a few years back where this was done & golly gee, can you believe it? Same results. All they had to do was ask any good Music Educator! How many gkkazillions of our Tax $$'s paid for that?!