Sinc christmas is supposedly worshipping that myth called christ, that is after all what christmas is named for, you can't have christmas music that is not religious, but you can have holiday music that is not religious. Take this rewritten one.

(to the tune of Silent Night)
Its coming soon,
Christmas night.
Son of God,
Pure bull shite.
A holiday built upon pa-agan dates.
Christians thought Yule Time,
Was the-eirs to take.
They're celebrating a li-ie!
Despite their great faith we all die.
A carol by insane4reason

insane4reason is in Yahoo if you want to contact him.