The tactic dates back to 1985, when a 7-Eleven in Canada came up with the idea after brainstorming with a group of psychologists about novel approaches to combat loitering (and the potential serious crimes that could follow).
One of the ideas was to play easy listening or classical music in the parking lot. The thinking was this kind of music is not popular with teens and may discourage them from ‘hanging out’ at the store. Since then, the tactic has been used in American cities like Dallas, Seattle, and Portland and in Australia and the U.K.
https://www.policeone.com/bizarre/articles/5-things-to-know-about-fighting-crime-with-classical-music-wKqDTRPjOjgxtxx3/