This is unfortunate. A decade or so ago I had a beta for something IIRC was called MusicMatch which was just an executable that could create iTunes playlists based off characteristics of a song in iTunes and it felt like magic. Then Apple bought them, supposedly built it into iTunes but it seemed to simply disappear (DarkSky is experiencing this same phenomenon right now). Does anyone have a recommendation for things like this? Starting a radio station off a song in Spotify works well enough, but it feels like it just selects "People who listen to X also listened to Y" whereas MusicMatch worked off a fingerprint technique that was more serendipitous.