By Eliot Van Buskirk from Spotify Insights. If art reflects society, we should pay attention when musicians sing about us, specific people, or themselves. Thousands of songs begin with the words “You Are,” “We Are,” and “I Am,” offering one portal into such matters. What if we were to look at each group of songs, and see how they tend to differ? This should tell us something interesting about how musicians — and, by extension, people — feel about people. And that is what Glenn McDonald, data alchemist for The Echo Nest at Spotify, decided to do. He created groups...

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