[benfrederickson]

There is a pretty good breakdown of a bunch of different options for visualizing sets here: http://www.cvast.tuwien.ac.at/SetViz

Venn/Euler diagrams don't work all that well past 3 sets, not all areas will be shown if using circles - so unless some of the sets are disjoint it will be a misleading diagram (like in the music example). However, I think it works well for 3 set diagams, I have an interactive example on last.fm data here https://www.benfrederickson.com/distance-metrics/ in the context of explaining some simple distance metrics.