Pop music surrounds us, but how often do we really listen to what we’re hearing? Switched on Pop is the podcast that pulls back the curtain on pop music. Each episode, join musicologist Nate Sloan and songwriter Charlie Harding as they reveal the secret formulas that make pop songs so infectious. By figuring out how pop hits work their magic, you’ll fall in love with songs you didn’t even know you liked.

Men singing high is so ubiquitous in modern pop that we might take it granted, never pausing to ask: has it always been this way?

Estelle Caswell, who makes the Emmy-winning Earworm series for Vox, decided to find out, and she stops by to share results from her painstaking study of male falsetto in pop music from 1958 to today. Some of her findings may surprise, like 1996 was the peak year for falsetto, Justin Timberlake doesn't sing as you high at might think, and falsetto has been around as long as pop itself.

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