[neilsharma]

Youtube playlists / individually curated mashups.

Youtube is a horrible discovery platform, the audio quality is lousy, and bandwidth is wasted on video. But the sheer volume of content + remixes + covers make it worthwhile. I can't think of a single song in any language of any genre and from any point in time that's not on the site.

8Tracks.com does a good job with discovering hand-curated playlists using youtube as its source.

I have a very global taste in music, and change favorite genres every few months (after exhausting most everything I can get my hands on). Spotify does a decent job in some categories, but the lack of content (especially international and instrumental) kill it for me. Pandora's recommendation engine always eventually recommends the pop hits. Even piano my piano instrumental playlists end up with Katy Perry.