Ask HN: Discovering new music?

How do you go about discovering new music? I find it easy to listen to the same old favourites, and would love a music-equivalent to hacker news. A lot of services, like last.fm and spotify, recommend music based on my listening habits, which definitely is an excellent functionality. I would, however, love to be fed recommendations somewhat uncorrelated to my current taste, in order to broaden my views. Any suggestions where to look?