Research Explains Why You're Playing T-Swift's Shake It Off on Repeat

Taylor Swift Photograph by ChinaFotoPress via Getty Image

Here’s the essential ingredient for a chart topper: backup vocals. Whether you’re a Belieber or an Ariana Grande devotee, there’s a good chance your favorite hit song received a little oomph from supporting singers, a study from the USC Marshall School of Business and SDA Bocconi University found.

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