I had something similar once - it was a graph of connections between all the artists in my Spotify library to see who had collab'd with who. It was a lot of fun to see just how distantly connected two artists were through a long chain of collabs and collabs. Of course, like most human connection maps, it mostly came down to a handful of super-connectors who collaborate with hundreds of people, who in turn collaborate with their own niche groups. But there were some interesting groups revealed by it.