Number one is to add a title and explanation to the image. If your data visualization does its job, I shouldn't need to come to the comment section to have any clue what I'm looking at.

> "musicians" who are promoted in the mass media don't make their own music, they are given tracks and assigned songs based on brand fit.

This is generally true (although variably so from artist to artist). However, I get annoyed that people act like this is a bad thing. Are we mad at the New York Philharmonic because they don't compose the music they perform? Of course not. Now of course, there's a greater level of transparency there, but who cares? Who cares if Bruno Mars writes his own music? He performs it well, and I like it. All there is to it.

And that certainly doesn't make them not musicians, so I take umbridge with your quotes.

Why do you miss it? Just go to one.

I think one thing that seems unnecessary in this chart to me is the differentiation of year. One glance at 5 songs a year isn't nearly enough to make any conclusions. I think it might be better to focus on one or two years (without distinguishing between them) and include many more data points so you can see more overall WPM trends.