So everyone knows Taylor Swift is one of the most popular musicians of all time, but how does she stack up to giants of the past like Michael Jackson and The Beatles? No matter how many reports of new chart records, we can’t shake the feeling that someone like MJ just had a larger cultural impact worldwide. This week, we crunch the numbers to see the true size of the Swiftdom we live in.

Our guest this week is Chris Dalla Riva, author of Uncharted Territory: What Numbers Tell Us about the Biggest Hit Songs and Ourselves.

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