What tune do you sing to While Shepherds Watched Their Flocks? There are lots. I have been told that was the only carol allowed (presumably by the C of E) in the C18th, so different places set their own tunes to it. When I arrived in Cornwall I heard two versions that were unfamiliar to this Londoner. Last week at a Christmas sing in Frogpool the words were sung at different points to three tunes, one version has a chorus about Chiming Christmas Bells.