The music is selected by what is determined as distinctive by Spotify:
What do we mean by 'distinctive?' This is music that people in each city listen to quite a bit, which people in other cities also do not listen to very much. So it is, exactly, the music that makes them different from people everywhere else.
Nearly a thousand cities are included in the tool, so you can listen to playlists of the most adored songs in Hong Kong, Sydney, or Sao Paulo.
Each playlist will update twice per month, meaning that users can keep using this map to listen to the up and coming tracks across the world.