Music recommendations are even worse than movies, in that they need to take into account what you've just listened to (if I'm listening to a specific genre, I'm unlikely to want something in a very different tempo and style), time of day (at bed time I'll often put on some soft classical music; that doesn't mean I want that every other time because I play it a lot), mood (if I suddenly play 1980's pop, it's probably nostalgia, and suddenly playing new music is not what I want), and at the same time I have preferences, but those are mediated by what I'm currently listening to.

Whenever I try to get a service or other to recommend music they are remarkably bad at this.

And rainbows. :)

Love GGP's anti-recommendation engine.