I have been testing Spotify's DJ .. I tell it to play new songs based upon my 20 playlists and exclude AI, rap and hiphop. Often the DJ does a good job with mixing my playlists with new music. Sometimes it is way off. To be fair it is in Beta.
When its right, its alright. When its wrong, its very wrong lol. It is in Beta and has been for a while. I sometimes wonder if its placed there so we aren't harsh with the critique