John Yang:

Right now Christmas music seems to be everywhere on the radio in stores and in waiting rooms but if history is any guide it will essentially disappear on Tuesday even though it's The radio in stores and in waiting rooms, but if history is any guide, it will essentially disappear on Tuesday. Even though its lifespan is the four weeks between Thanksgiving and Christmas, Christmas music is a big part of the music industry.

Nate Sloan is an assistant professor of Musicology at the University of Southern California's Thornton School of Music. He's also the co-host of a podcast called Switched on Pop.

Nate, what is it about Christmas music that makes it so popular that makes people love it so?

Nate Sloan, University of Southern California, Thornton School of Music: I think the main thing is that it sounds different from the things that you hear the rest of the year on radio. Christmas music is nostalgic. It's from a different era. It uses acoustic instruments. You hear voices like Bing Crosby and Brenda Lee. It stands out from business as usual in the American music industry.

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