How does the Spotify algorithm work? I mean the "Made for you" section. What does Spotify exactly track? Of course, If I listen to EDM then Spotify would make Daily EDM Mixes and Discover EDM Weekly. But is that the same with local music? Maybe I listen to a lot of rock in my local files via Spotify. Would the Spotify algorithm get it and suggest me some rock music too? And does the algorithm also work with custom-made playlists?