Project by https://news.ycombinator.com/user?id=mg

All manually user-generated by people contributing <= 3 names through https://www.gnoosic.com/, then voting on other names suggested in the same neighborhood of the graph.

It would be cool data to get access to. But it's a nice singleton in the mean time. Like Netflix's challenge dataset, it would be interesting to have another layer of associations to compare with more formal genre lists. I wonder what kind of data Spotify releases.