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COVER STORY: What makes for a great Christmas song?

The most popular and enduring Christmas songs, from "Jingle Bells" to "All I Want for Christmas Is You," share many traits, according to musicologist Joe Bennett. He talks with David Pogue about the most common songwriting components that make a great Christmas classic. Then, Pogue tries his hand at composing a holiday song, "The Sound of Christmas," which is given its world premiere performance by Broadway star Kerry Butler.

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Joe Bennett, professor, Berklee School of Music

Kerry Butler (Of

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