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Researchers are discovering how music affects the brain, helping us to make sense of its real emotional and social power. One Love Music Festival has since 2015 welcome more than 23,000 fans and performers including J Cole, Nas, Big Sean, Logic, and more. In other words, they are afraid that if they pick a song that only they enjoy, that their guests will not have the same taste in music and will disapprove.

But this time she had participants listen to unfamiliar songs, and she gave them some money, instructing them to spend it on any music they liked. It was …