Rap music has changed a ton over the past 25 years, and Polygraph’s Matt Daniels has created the interactive graph to prove it. Teaming up with the folks at Billboard, Daniels created a chart the both ...

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Matt Daniels has been making beautiful data visualizations at Poly-graph for a while now, but this might be some of his best work. Using Billboard’s “Hot Rap Songs” chart as a metric, Daniels (along ...