How does a pop song turn into a cultural phenomenon? Nate Sloan and Charlie Harding examine the formulas behind some of today's biggest hits in their podcast, 'Switched on Pop.' Now the duo have analyzed the concepts behind the success of some of the 21st century's biggest chart toppers in their new book 'Switched on Pop: How Popular Music Works, and Why it Matters." Sloan and Harding sat down with Cheddar to breakdown what made 'Call Me Maybe' so infectious and why Mariah Carey's 'All I Want for Christmas' has become a classic.