You might be surprised to learn that many Christmas songs were written by Jewish songwriters! Check out the story on the Jewish Publication Society blog: Jews and Christmas music – not such an unlikely mix!
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Encouraging curiosity about the world
I actually knew that about the Christmas Song, because Bing Crosby cites them before he sings it on his album, and my father loves Bing Crosby.
In an unfortunate related vein: “Garrison Keiler Falls Flat” (Pharyngula):
http://scienceblogs.com/pharyngula/2009/12/garrison_keillor_falls_flat.php