One could find a good list of christmas carols in a music book,
a book specifically about christmas carols, or on a webpage devoted
to christmas carols.
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Christmas carols are sung to celebrate the various things
Christmas represents.
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I think Christmas carols have a universal appeal because Jesus
has a universal appeal. * You will find most Christmas Carols to
have a similar rhythm to the human heart beat as well as the
lullaby tune appeals to our original needs as an infant.