I realised recently that most media recommenders don't work for me because they are based on genre. If you like The Watchmen film, you're sure to like Marvel films because they're also action, and based on comics. We see you listened to Pearl Jam a lot, you're going to get a kick out of Nirvana.

That's just not how I work. I like _good_ stuff, I don't confine myself to genres, I'll go anywhere if it's half decent. I want a service that says hey, you listened to Benny Goodman's Sing Sing Sing, you should check out The Thirteenth Floor Elevators' first album.

The only recommendation that kinda works for me is based on an aggregation of what other people listened a lot to. Sure on small data sets that is probably going to be genre biased, but on large sets it can start working and break out of that.