Great article bro. I recommend the algorithms on Google Play Music, because they can build playlists out of stuff you upload yourself, which is insane! For example, I just uploaded James “JT” Taylor’s (of Kool & The Gang) solo album, which isn’t on any streaming service and is long out-of-print. Google just generated a playlist on the fly based on the record, with Cameo, Kool, Kashif, Regina Belle, Earth Wind & Fire, Jermaine Jackson and more. It absolutely nailed it, and yesterday it didn’t even have the source material. It’s really impressive.