I stumbled upon Troi. Troi can generate music recommendations https://github.com/metabrainz/troi-recommendation-playground

There's also a playlist generator https://listenbrainz.org/explore/lb-radio/ try it with "tag:edm" or "tag:rock".

It needs to be integrated into available services and mature a bit but then it can become a spotify replacement. It needs more users for more scrobbles as well. This is awesome! Imagine having automated playlists in a subsonic server based on public popularity.

Such info was usually only available to companies like spotify. This is amazing.