MarkTheHerald.com ✦ The Herald Dispatch ✦ Every Christmas, somewhere between the first week of December and the final chord of a Christmas Eve service, most of us sing "Hark! The Herald Angels Sing" without thinking too hard about where it came from. We know it's old. We know it's a classic. We know it involves angels, a newborn King, and a melody that manages to feel simultaneously triumphant and tender. What most of us don't know is that the carol we sing today has been