A few years ago, Spotify published an online interactive map of musical tastes, sorted by city. At the time, Jeanne Added prevailed in Paris and Nantes, and London was partial to local hip hop duo Krept and Kronan. It is well established that music tastes vary over time, by region and even by social group. However, most brains look alike at birth, so what happens in them that causes us to end up with such disparate music tastes?
